{"title":"Aquarium Heaters","description":"\u003cp\u003eSubmersible and preset heaters for tropical tanks. Makers on these pages include PAIZOO, PremToytics, GOTOTOP and 10 more.\u003c\/p\u003e\u003cp\u003eSee the wider \u003ca href=\"\/collections\/fish-aquatics\"\u003eFish \u0026amp; Aquatics\u003c\/a\u003e collection; nearby pages include \u003ca href=\"\/collections\/aquariums\"\u003eAquariums \u0026amp; Fish Tanks\u003c\/a\u003e, \u003ca href=\"\/collections\/aquarium-filtration\"\u003eAquarium Filters, Pumps \u0026amp; Air\u003c\/a\u003e, \u003ca href=\"\/collections\/aquarium-decor\"\u003eAquarium Décor\u003c\/a\u003e and \u003ca href=\"\/collections\/aquarium-water-care\"\u003eWater Conditioners \u0026amp; Test Kits\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"premtoytics-10w-usb-aquarium-heater-for-0-5-1-gallon-tanks-shatter-resistant-ceramic-with-digital-control","title":"PremToytics 10W USB Aquarium Heater for 1.9–3.8 L Tanks, Shatter-Resistant Ceramic with Digital Control","description":"\u003cp\u003ePremToytics is a shatter-resistant alumina ceramic aquarium heater designed to warm 0.5–1 gallon (1.9–3.8 L) fish tanks, with 10W USB power for compact setups.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExternal digital temperature controller — adjust the set temperature for your aquarium.\u003c\/li\u003e\n\u003cli\u003e64–93°F (18–34°C) adjustment range — choose a setting within the heater’s stated range.\u003c\/li\u003e\n\u003cli\u003eAutomatic temperature control with 1°F (0.6°C) accuracy — heating stops at the set temperature and maintains it.\u003c\/li\u003e\n\u003cli\u003eOverheating protection — power cuts off automatically if the heater overheats.\u003c\/li\u003e\n\u003cli\u003eSettings retained after power loss — the selected setting does not need to be reset.\u003c\/li\u003e\n\u003cli\u003e5V\/2A USB power — use a compatible USB power source near a computer, power bank, or USB wall charger.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSmall aquariums can call for a heater made for a compact volume rather than a larger tank. PremToytics is intended for betta fish, shrimp tanks, and desktop nano aquariums, with temperature adjustment and automatic controls built into its design. Its small-tank focus makes the stated capacity especially useful when choosing a heater for a compact aquatic setup.\u003c\/p\u003e\n\u003ch3\u003eWhich aquarium size and setups is this heater designed for?\u003c\/h3\u003e\n\u003cp\u003ePremToytics is designed for 0.5–1 gallon aquariums and small tanks below 1 gallon. It is suited to betta fish, shrimp tanks, and desktop nano aquariums. Match the tank’s capacity to this range when selecting a heater; its stated use is for small aquariums, not larger tank setups.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMade for compact aquarium environments.\u003c\/li\u003e\n\u003cli\u003eIntended for betta fish and shrimp tanks as well as desktop nano tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow do the temperature controls work?\u003c\/h3\u003e\n\u003cp\u003eThe external digital controller lets you adjust the temperature from 64–93°F (18–34°C). Once the water reaches the selected temperature, heating stops automatically; the heater then maintains the temperature with 1°F (0.6°C) accuracy. If power is lost, the heater retains its settings, so you do not need to reset the selected temperature.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDigital temperature display on the external controller.\u003c\/li\u003e\n\u003cli\u003eAutomatic heating control responds to the selected setting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat powers the heater, and what protects against overheating?\u003c\/h3\u003e\n\u003cp\u003ePremToytics uses 10W USB power at 5V\/2A, allowing placement near a computer, power bank, or USB wall charger. The heater’s overheating protection automatically cuts power and stops heating if it overheats. Its heating cycle also stops when the selected temperature is reached.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUSB-powered design avoids the need for a bulky power adapter.\u003c\/li\u003e\n\u003cli\u003eAutomatic power cutoff provides an additional overheating safeguard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat makes the heater shatter-resistant?\u003c\/h3\u003e\n\u003cp\u003eThe heater is made from alumina ceramic, which has greater resistance to breakage during prolonged use than quartz heaters. The material also has mechanical strength and thermal and chemical stability, qualities relevant to a heater used in aquarium water.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlumina ceramic construction rather than quartz.\u003c\/li\u003e\n\u003cli\u003eDesigned to resist breakage during prolonged use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePremToytics is suited to aquarium keepers heating a betta, shrimp, or other compact desktop tank within its stated capacity. Its USB power, adjustable external controller, automatic temperature control, and alumina ceramic construction are tailored to small-tank use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What size aquarium is the PremToytics aquarium heater for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The PremToytics aquarium heater is designed for 0.5–1 gallon tanks and small aquariums below 1 gallon, including betta, shrimp, and desktop nano tanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do you adjust the PremToytics aquarium heater temperature?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The PremToytics aquarium heater has an external digital controller with a 64–93°F (18–34°C) adjustment range and automatically stops heating at the selected temperature.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PremToytics","offers":[{"title":"Default Title","offer_id":67855134589319,"sku":"B0GCNGH9RQ","price":29.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/premtoytics-aquarium-heater-front-view.jpg?v=1793455500"},{"product_id":"gototop-aquarium-heater-guard-no-0-18-5-cm-adjustable-plastic-cover","title":"GOTOTOP Aquarium Heater Guard, No. 0 18.5 cm Adjustable Plastic Cover","description":"\u003cp\u003e\u003cstrong\u003eThe GOTOTOP Fish Heater Protective Case is a detachable cover designed to help shield aquarium fish, turtles and frogs from heater breakage and scalding; this No. 0 sleeve is 18.5 cm (7.3 in) long.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFor round-type heaters — made to fit this heater shape.\u003c\/li\u003e\n\u003cli\u003eSuction-cup design — helps secure the heater in place.\u003c\/li\u003e\n\u003cli\u003eDetachable and adjustable construction — lets you set the cover to the length you need.\u003c\/li\u003e\n\u003cli\u003ePlastic case — provides a physical guard around the heater.\u003c\/li\u003e\n\u003cli\u003eMade for aquariums with fish, turtles or frogs — helps reduce the risk of accidental breakage and scalding.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA heater needs to sit in an aquarium while its heat source remains accessible to the surrounding water. This protective case adds a barrier around the heater for tanks containing fish, turtles or frogs. Its design focuses on keeping the heater secured and helping prevent direct contact that could lead to scalding, as well as accidental breakage. It is a practical option for aquarium keepers who want a cover that can be adjusted to suit their heater setup.\u003c\/p\u003e\u003ch3\u003eWhich aquarium heaters does the case fit?\u003c\/h3\u003e\u003cp\u003eThe GOTOTOP protective case is suitable for round-type aquarium heaters. The No. 0 version measures 18.5 cm (7.3 in) long, giving you a specific length to compare with the heater you plan to cover. The case is adjustable, so its length can be set as needed rather than being fixed in one position. Before choosing this size, compare the heater’s shape and length with the sleeve.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeater shape: round type.\u003c\/li\u003e\n\u003cli\u003eSleeve size: No. 0, 18.5 cm long.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow does the protective case attach?\u003c\/h3\u003e\u003cp\u003eSuction cups make it possible to secure the heater in the aquarium, without a more involved fitting method described for the case. Positioning the heater with the cups helps keep it in place as part of the aquarium setup. The detachable construction also lets you adjust the cover length to suit the heater being used.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAttachment: suction cups.\u003c\/li\u003e\n\u003cli\u003eAdjustment: detachable design with adjustable length.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat does the heater guard help protect?\u003c\/h3\u003e\u003cp\u003eThe GOTOTOP cover is designed to help protect both the heater and aquarium animals from accidental breakage and scalding. A plastic guard surrounds the heater, adding a physical protective layer. Its sturdy plastic construction is intended for long service time, making it suitable for aquarium setups where a heater guard is needed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCase material: plastic.\u003c\/li\u003e\n\u003cli\u003eIntended aquarium inhabitants: fish, turtles and frogs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis case is suited to aquarium keepers using a round-type heater who want an adjustable cover secured with suction cups. For the best fit, compare the No. 0 sleeve’s 18.5 cm length with your heater before choosing. Its defining features are a plastic protective cover, suction-cup attachment and adjustable, detachable construction.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What heater does the GOTOTOP Fish Heater Protective Case fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The GOTOTOP Fish Heater Protective Case is suitable for round-type heaters. The No. 0 sleeve is 18.5 cm long; compare its length with your heater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How does the GOTOTOP Fish Heater Protective Case attach?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The GOTOTOP Fish Heater Protective Case uses suction cups to help secure the heater, and its detachable design lets you adjust the cover length.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GOTOTOP","offers":[{"title":"Default Title","offer_id":67855235416455,"sku":"B09WRTB45G","price":30.87,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/gototop-fish-heater-case-front-view.jpg?v=1793455781"},{"product_id":"aquamiracle-10w-mini-aquarium-heater-for-1-gallon-betta-tanks-usb-powered","title":"AquaMiracle 10W Mini Aquarium Heater for 3.8 L Betta Tanks, USB-Powered","description":"\u003cp\u003eAquaMiracle’s 10W mini USB aquarium heater is made to warm nano and betta tanks up to 1 gallon (3.8 L), with a compact 1.97-inch (5 cm) heater body.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5V\/2A USB power — run it from a compatible adapter or power bank.\u003c\/li\u003e\n\u003cli\u003e64–93°F temperature range — set the target temperature for the tank.\u003c\/li\u003e\n\u003cli\u003eIntelligent inverter thermostat with 1°F accuracy — maintain a more consistent set temperature.\u003c\/li\u003e\n\u003cli\u003eTemperature cutoff above 97°F — the heater stops when the water exceeds this threshold.\u003c\/li\u003e\n\u003cli\u003eFreshwater and marine use — also designed for turtles, pet fountains, and plant seedlings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSmall tanks leave little room for equipment, while conventional heaters can take up space and be harder to conceal. AquaMiracle’s compact format is intended for nano aquariums and betta setups where a short heater is useful. Its thermostat displays both the current water temperature and the selected setting, so you can see the reading and target together.\u003c\/p\u003e\n\u003ch3\u003eIs the AquaMiracle heater sized for my tank?\u003c\/h3\u003e\n\u003cp\u003eYes. The heater is intended for tanks up to 1 gallon (3.8 L), including nano and betta tanks. Its 1.97-inch (5 cm) length takes up less room in a small setup and is easier to tuck out of sight than a longer heater. Keep the tank’s capacity in mind when choosing it: the stated maximum is 1 gallon.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuper-mini, thumb-size form for compact aquariums.\u003c\/li\u003e\n\u003cli\u003eDesigned to take up less space inside the tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow does the thermostat control the temperature?\u003c\/h3\u003e\n\u003cp\u003eThe built-in thermostat uses intelligent inverter technology to hold the selected temperature with 1°F accuracy. Its display gives two readings—the current temperature and the set temperature—so you can compare the water reading with your chosen target. The selectable temperature range is 64–93°F.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStops heating if the water rises above 97°F.\u003c\/li\u003e\n\u003cli\u003eStores the last temperature setting and resumes it after power returns.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat power source and water types work with it?\u003c\/h3\u003e\n\u003cp\u003ePower the heater through a 5V\/2A USB source, using either a 5V\/2A power adapter or a 5V\/2A power bank. The adapter and power bank are not included. The heater is suitable for freshwater and marine water and can also be used with turtles, pet fountains, and plant seedlings.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUSB-powered at 5V\/2A.\u003c\/li\u003e\n\u003cli\u003eChoose a compatible power source rated at 5V\/2A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis heater suits fish keepers who need a compact heating option for a nano or betta aquarium within the 1-gallon limit, as well as the other listed uses. Its short 1.97-inch body, USB power, and thermostat display make it a space-conscious choice for small setups rather than larger aquariums.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tank size is the AquaMiracle mini aquarium heater designed for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The AquaMiracle mini aquarium heater is designed for tanks up to 1 gallon (3.8 L), including nano and betta tanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What power source does the AquaMiracle mini aquarium heater need?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The AquaMiracle mini aquarium heater requires a 5V\/2A USB power source, such as a compatible adapter or power bank; neither is included.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AquaMiracle","offers":[{"title":"Default Title","offer_id":67856695099783,"sku":"B0B55X425X","price":31.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/aquamiracle-mini-aquarium-heater-front.jpg?v=1793461385"},{"product_id":"azrekv-usb-heating-rod-and-drying-stick-set-115-f-fast-heat-with-two-reusable-sticks","title":"AZREKV USB Heating Rod and Drying Stick Set, 46 °C Fast Heat with Two Reusable Sticks","description":"\u003cp\u003e\u003cstrong\u003eAZREKV’s USB heating rod and drying stick set is made to warm cold surfaces and help keep stored items dry, with a 5.3-inch heating rod that reaches up to 115°F (46°C) in 4 minutes and two reusable moisture-absorbing sticks.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOne USB heating rod and two drying sticks — warm surfaces and help manage damp storage with one set.\u003c\/li\u003e\n\u003cli\u003eReaches up to 115°F (46°C) in 4 minutes — provides quick warmth, then power-off protection automatically stops heating.\u003c\/li\u003e\n\u003cli\u003eUniversal USB connection — works with phone chargers, power banks, car chargers, and computer USB ports.\u003c\/li\u003e\n\u003cli\u003e360° heating from a built-in spiral core — the 5.3-inch (13.5 cm) rod comes with a 28.5-inch (72.4 cm) USB cable.\u003c\/li\u003e\n\u003cli\u003eTwo diatomaceous-earth drying sticks — absorb residual moisture and impurities, then dry naturally for reuse.\u003c\/li\u003e\n\u003cli\u003eWaterproof design and included storage pouch — supports easy cleaning and storage of the drying sticks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis set brings together a compact USB-powered heater and drying sticks for situations where cold surfaces or moisture in storage are a concern. Use the heating rod with a compatible USB power source; place the drying sticks alongside stored items to absorb residual moisture. The two functions are built into one set, while each component serves a distinct purpose.\u003c\/p\u003e\u003ch3\u003eHow quickly does the AZREKV heating rod warm up?\u003c\/h3\u003e\u003cp\u003eThe AZREKV heating rod reaches a maximum of 115°F (46°C) in 4 minutes. Its LED indicator flashes while heating and stops flashing when the rod is heated; power-off protection then automatically shuts off the heating. A built-in spiral heating core provides 360° heating through the integrated body.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRod length: 5.3 inches (13.5 cm).\u003c\/li\u003e\n\u003cli\u003eUSB cable length: 28.5 inches (72.4 cm).\u003c\/li\u003e\n\u003cli\u003eSuitable USB sources include phone chargers, power banks, car chargers, and computer ports.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat comes with the AZREKV heating and drying set?\u003c\/h3\u003e\u003cp\u003eThe set contains one USB heating rod, two moisture-absorbing drying sticks, and a storage pouch for the sticks. The rod is designed for warming, while the sticks are made for moisture management alongside stored items.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe drying sticks are made from refined mineral diatomaceous earth.\u003c\/li\u003e\n\u003cli\u003eThey absorb residual moisture and impurities.\u003c\/li\u003e\n\u003cli\u003eAfter use, moisture evaporates naturally, allowing the sticks to be used again.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow do the AZREKV drying sticks fit into storage care?\u003c\/h3\u003e\u003cp\u003ePlace the drying sticks beside the items you are storing, using the included pouch for storage and maintenance. Their moisture absorption and natural drying process support repeated use without replacing the sticks after each use.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTwo sticks are included.\u003c\/li\u003e\n\u003cli\u003eThe set’s material is described as eco-friendly, non-toxic, odorless, and harmless.\u003c\/li\u003e\n\u003cli\u003eThe 100% waterproof design makes cleaning easy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAZREKV’s heating and drying set suits people looking to warm cold surfaces with USB power and manage residual moisture around stored items. It combines a short heating rod with two reusable drying sticks rather than serving as a conventional room heater; its stated functions are surface warming and storage moisture absorption.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How fast does the AZREKV heating rod heat up?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The AZREKV heating rod reaches up to 115°F (46°C) in 4 minutes, then its power-off protection automatically shuts off heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is included in the AZREKV heating and drying stick set?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The AZREKV set includes one USB heating rod, two reusable moisture-absorbing drying sticks, and a storage pouch for the sticks.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AZREKV","offers":[{"title":"Default Title","offer_id":67861972910471,"sku":"B0FS5VJ194","price":33.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/azrekv-heating-stick-set-front.jpg?v=1793475364"},{"product_id":"uniheat-shipping-warmers-4-pack-with-bonus-20-hour-heat-pack-40-hour-heat","title":"Uniheat Shipping Warmers, 4-Pack with Bonus 20-Hour Heat Pack, 40+ Hour Heat","description":"\u003cp\u003e\u003cstrong\u003eUniheat Shipping Warmers are heat packs for shipping live items, with four warmers designed to release heat for 40+ hours and one bonus 20-hour heat pack.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFour 40-hour shipping warmers — provide heat for long-duration shipments.\u003c\/li\u003e\n\u003cli\u003eOne bonus 20-hour heat pack — adds a separate warmer to the pack.\u003c\/li\u003e\n\u003cli\u003eAverage warmer surface temperature of 100°F (38°C) — gives a concrete temperature reference.\u003c\/li\u003e\n\u003cli\u003eSimple activation — open, unwrap, and let each warmer sit for 10+ minutes to start heating.\u003c\/li\u003e\n\u003cli\u003eBag-and-seal use — placing the shipping item and warmer in a sealed shipping bag helps lock in heat.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eShipping live animals or temperature-sensitive items can call for a heat source that releases warmth over an extended period. Uniheat warmers are made for shipping live corals, insects, reptiles, fish, and flowers. Their stated heat duration and straightforward activation make them suitable for preparing shipments where a warmer is placed in a shipping bag with the item.\u003c\/p\u003e\n\u003ch3\u003eHow long do Uniheat Shipping Warmers provide heat?\u003c\/h3\u003e\n\u003cp\u003eEach of the four main warmers is designed for 40+ hours of steady heat release, with an average warmer surface temperature of 100°F (38°C). These details help you plan around the shipping period and understand the warmer’s surface temperature; they do not specify the temperature inside a package.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeat release is designed to be steady.\u003c\/li\u003e\n\u003cli\u003eThe average surface temperature is 100°F (38°C).\u003c\/li\u003e\n\u003cli\u003eThe bonus pack is a separate 20-hour heat pack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow do I activate and use the heat packs?\u003c\/h3\u003e\n\u003cp\u003eOpen and unwrap a warmer, then let it sit for 10+ minutes to start the heat process. Put the shipping item in a shipping bag with the warmer and seal the bag to lock in heat. For extra insulation from the cold, use bags double-bagged.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAllow 10+ minutes for the heat process to start.\u003c\/li\u003e\n\u003cli\u003eSeal the bag after placing the shipping item inside.\u003c\/li\u003e\n\u003cli\u003eDouble bag for the extra insulation described for colder conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat is included, and what can these warmers ship?\u003c\/h3\u003e\n\u003cp\u003eThe pack contains four Uniheat 40-hour warmers and one bonus 20-hour heat pack. The warmers are intended for shipping live corals, insects, reptiles, fish, and flowers, giving you one heat-pack set for a range of live or temperature-sensitive shipping needs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFour main warmers, each designed for 40+ hours of heat release.\u003c\/li\u003e\n\u003cli\u003eOne additional 20-hour heat pack.\u003c\/li\u003e\n\u003cli\u003eIntended shipping uses include live corals, insects, reptiles, fish, and flowers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUniheat Shipping Warmers suit shippers preparing live corals, insects, reptiles, fish, or flowers for transit and who want heat packs with a stated duration and simple activation. They are intended to be used with sealed shipping bags, with double bagging offered as an extra insulation step. This set combines four long-duration warmers with one bonus 20-hour pack for heat-assisted shipping.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many heat packs come with Uniheat Shipping Warmers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Uniheat Shipping Warmers include four warmers designed for 40+ hours of heat release and one bonus 20-hour heat pack.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I start Uniheat Shipping Warmers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Open and unwrap a Uniheat Shipping Warmer, then let it sit for 10+ minutes to start the heat process before placing it with the shipping item in a sealed bag.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Uniheat","offers":[{"title":"Default Title","offer_id":67862176956807,"sku":"B09HSSLH11","price":33.52,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/uniheat-shipping-warmers-pack-front.jpg?v=1793476189"},{"product_id":"fumak-10w-mini-aquarium-heater-for-betta-tanks-usb-5v-2a-ceramic-up-to-1-gallon","title":"FUMAK 10W Mini Aquarium Heater for Betta Tanks, USB 5V\/2A Ceramic, Up to 3.8 L","description":"\u003cp\u003eFUMAK’s 10W USB alumina ceramic mini aquarium heater is designed to warm nano and betta tanks up to 1 gal (3.8 L), with temperature control accurate to 1°F (0.6°C).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlumina ceramic with rapid heat conduction — designed to save 20–30% energy.\u003c\/li\u003e\n\u003cli\u003eTemperature control with current and set-temperature readings — makes settings easier to monitor.\u003c\/li\u003e\n\u003cli\u003eAutomatic shutoff above 97°F (36.1°C) — provides an overheating safeguard.\u003c\/li\u003e\n\u003cli\u003eMemory function — restores the previous temperature setting after power returns.\u003c\/li\u003e\n\u003cli\u003eSuitable for freshwater and marine tanks, plus turtle tanks, pet fountains, and plant seedlings — supports several small-scale uses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSmall aquatic setups can have limited room for heating equipment. This mini heater is made for nano and betta tanks, where its compact form takes up minimal space, and its USB 5V\/2A power specification identifies the required electrical rating.\u003c\/p\u003e\n\u003ch3\u003eWhat tank size is this mini heater designed for?\u003c\/h3\u003e\n\u003cp\u003eFUMAK’s heater is intended for tanks up to 1 gal (3.8 L), including nano tanks and betta tanks. Its super-mini form is designed to occupy minimal space in a small setup while providing 10W of power. Compare your tank’s capacity with the 1-gallon limit when choosing a heater.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower: 10W.\u003c\/li\u003e\n\u003cli\u003eUSB electrical rating: 5V\/2A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow does FUMAK’s heater manage temperature?\u003c\/h3\u003e\n\u003cp\u003eIntelligent inverter technology and built-in chips regulate temperature with 1°F (0.6°C) accuracy. The thermostat shows both the current water temperature and the selected temperature, so you can view both readings while monitoring the setting. The heater automatically shuts off if water temperature exceeds 97°F (36.1°C).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTemperature display: current and set readings.\u003c\/li\u003e\n\u003cli\u003eAfter a power outage, the memory function resumes the last temperature setting when power is restored.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat materials and setups can it be used with?\u003c\/h3\u003e\n\u003cp\u003eFUMAK’s mini heater uses an alumina ceramic heating element. The material’s rapid heat conduction is designed to save 20–30% energy; the ceramic is also described as having mechanical strength, heat and chemical stability, and electrical insulation properties.\u003c\/p\u003e\n\u003cp\u003eThe heater is suitable for freshwater and marine aquariums, and can also be used for turtle tanks, pet fountains, and plant seedlings. These options make it useful beyond betta tanks while keeping its compact format suited to small setups.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: alumina ceramic.\u003c\/li\u003e\n\u003cli\u003eUse settings: freshwater and marine tanks, turtle tanks, pet fountains, and plant seedlings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFUMAK’s mini heater is suited to fish keepers with nano or betta tanks within its 1-gallon capacity, as well as those using one of the other stated small-scale setups. Its 10W USB power, compact ceramic design, temperature monitoring, and automatic shutoff define its role in a small habitat.\u003c\/p\u003e\n\u003ch3\u003eIngredients\u003c\/h3\u003e\n\u003cp\u003eAlumina ceramic, Rubber, ABS\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tank size is the FUMAK mini betta heater suitable for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The FUMAK mini betta heater is designed for tanks up to 1 gal (3.8 L), including nano and betta tanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the FUMAK mini betta heater be used in freshwater and marine tanks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The FUMAK mini betta heater is suitable for freshwater and marine tanks, and also for turtle tanks, pet fountains, and plant seedlings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FUMAK","offers":[{"title":"Default Title","offer_id":67865605177735,"sku":"B0FJRMKSXF","price":32.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/fumak-mini-betta-heater-front-view.jpg?v=1793491303"},{"product_id":"londafish-aquarium-cooling-fan-2-fan-12v-two-speed-adjustable-tank-cooler","title":"LONDAFISH Aquarium Cooling Fan, 2-Fan 12V Two-Speed Adjustable Tank Cooler","description":"\u003cp\u003e\u003cstrong\u003eThe LONDAFISH Aquarium Cooling Fan is a two-fan cooling unit for aquarium water, powered by a 12V safe-voltage supply.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable jaws fit tank rims up to 12 mm thick — clamp the unit to a compatible aquarium edge.\u003c\/li\u003e\n\u003cli\u003eTwo-speed airflow can lower water temperature by up to 2–3°C — the result depends on indoor temperature.\u003c\/li\u003e\n\u003cli\u003eAdjustable fan and bracket angle up to 100° — position the airflow for your setup.\u003c\/li\u003e\n\u003cli\u003eSuggested for a 40 cm fish tank — use the stated tank size as a guide when choosing the two-fan configuration.\u003c\/li\u003e\n\u003cli\u003eAdjustable width and a movable bracket — make installation and repositioning easier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen aquarium water needs cooling, this fan directs airflow across the tank to help bring the water temperature down. Its two-speed control lets you select airflow according to the indoor temperature, while the adjustable clamp is designed for tanks with a compatible rim or cylinder wall. It is suited to aquarium setups where a fan-mounted cooling option is useful and the rim falls within its stated fit range.\u003c\/p\u003e\n\u003ch3\u003eHow does the LONDAFISH Aquarium Cooling Fan cool tank water?\u003c\/h3\u003e\n\u003cp\u003eThe fan uses two selectable airflow speeds, and the water temperature may drop by up to 2–3°C depending on the indoor temperature. Choose the speed to suit the room conditions and the cooling needed for your aquarium.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-speed wind control gives you a choice of airflow.\u003c\/li\u003e\n\u003cli\u003eThe temperature reduction is an upper limit, not a guaranteed result; indoor temperature affects performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWill the LONDAFISH Aquarium Cooling Fan fit my tank?\u003c\/h3\u003e\n\u003cp\u003eIts adjustable jaws clamp onto a tank rim or cylinder wall up to 12 mm thick. The suggested pairing is the two-fan unit with a 40 cm fish tank, so compare your tank’s rim thickness and size with these figures before choosing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe clamp is adjustable for everyday aquarium use.\u003c\/li\u003e\n\u003cli\u003eCheck the thickness of the aquarium edge where you plan to attach the fan.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow is the LONDAFISH Aquarium Cooling Fan positioned?\u003c\/h3\u003e\n\u003cp\u003eThe fan and bracket adjust to an angle of up to 100°, allowing you to change their position after clamping the unit to the tank. The bracket can also be moved to suit the aquarium setup.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe unit operates at 12V.\u003c\/li\u003e\n\u003cli\u003eThe adjustable jaw is made to secure the fan to the aquarium wall or rim within the stated thickness limit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis cooling fan suits aquarium keepers looking for a clamp-mounted way to direct airflow at tank water, particularly those with a 40 cm tank and a rim or wall no thicker than 12 mm. It is designed for aquarium cooling rather than for tanks outside its stated clamp-fit range. Its two-speed airflow, adjustable positioning and 12V power define the setup.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tank rim thickness does the LONDAFISH Aquarium Cooling Fan fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The LONDAFISH Aquarium Cooling Fan has adjustable jaws that clamp onto a tank rim or cylinder wall up to 12 mm thick.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much can the LONDAFISH Aquarium Cooling Fan lower water temperature?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The LONDAFISH Aquarium Cooling Fan can lower water temperature by up to 2–3°C, depending on indoor temperature and the selected airflow speed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"LONDAFISH","offers":[{"title":"Default Title","offer_id":67866004980103,"sku":"B07FCJGZ4H","price":37.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/londafish-aquarium-cooling-fan-front-view.jpg?v=1793494892"},{"product_id":"datoo-aquarium-cooling-fan-with-360-adjustable-airflow-quiet-clip-on-mount","title":"DaToo Aquarium Cooling Fan with 360° Adjustable Airflow, Quiet Clip-On Mount","description":"\u003cp\u003eThe DaToo Aquarium Cooling Fan is a clip-on aquarium chiller designed to cool freshwater and saltwater tanks, with 360° adjustable airflow and a stated 4°F–7°F water-temperature reduction depending on conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDesigned to lower tank temperature by 4°F–7°F (2.2°C–3.9°C), depending on weather and outside temperature — helps manage aquarium heat.\u003c\/li\u003e\n\u003cli\u003e360° adjustable wind direction — lets you aim airflow where it suits your setup.\u003c\/li\u003e\n\u003cli\u003eNoise of no more than 25 dB — helps keep fan sound low in the room.\u003c\/li\u003e\n\u003cli\u003eTwo-screw and suction-cup fixation — gives you two ways to secure the fan.\u003c\/li\u003e\n\u003cli\u003eFor freshwater and saltwater tanks — suits both aquarium types.\u003c\/li\u003e\n\u003cli\u003eOne-year manufacturer warranty — provides a defined warranty period.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHigh aquarium temperatures can be a concern during hot weather. This fan moves air across the tank to help reduce water temperature, and its adjustable head and support bracket let you direct the airflow to suit the aquarium arrangement.\u003c\/p\u003e\u003ch3\u003eHow much can the DaToo aquarium fan cool the water?\u003c\/h3\u003e\u003cp\u003eThe DaToo Aquarium Cooling Fan is designed to lower aquarium water temperature by 4°F–7°F (2.2°C–3.9°C), with the result depending on weather and outside temperature. Its continuous airflow is intended for use around the clock, including overnight, so it can keep operating through changing room conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCooling performance varies with the surrounding conditions.\u003c\/li\u003e\n\u003cli\u003eThe fan uses a brushless motor, with noise rated at no more than 25 dB.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDoes the DaToo fan fit freshwater and saltwater aquariums?\u003c\/h3\u003e\u003cp\u003eYes, the DaToo Aquarium Cooling Fan is made for both freshwater and saltwater tanks. Its listed dimensions are 6 × 6 × 10 inches (15.24 × 15.24 × 25.4 cm), so compare those measurements with the space available at your aquarium before choosing where to position it.\u003c\/p\u003e\u003cp\u003eThe fan head or support bracket can be adjusted through 360° to direct airflow. For attachment, the design combines two screws with a large suction cup; use the available fixing points to secure the fan in place.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower cord length: 4.2 ft (1.28 m).\u003c\/li\u003e\n\u003cli\u003eAdjustable fan head and support bracket allow airflow direction changes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat power does the DaToo aquarium cooling fan use?\u003c\/h3\u003e\u003cp\u003eThe DaToo Aquarium Cooling Fan connects to AC 100–240V, 50\/60Hz input and operates at DC 5V output. Its 5V working voltage is the stated low-voltage operating specification.\u003c\/p\u003e\u003cp\u003eThe one-year manufacturer warranty applies to this fan. Position it so the airflow reaches the aquarium while keeping the fan secured with its screw and suction-cup fixing system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInput: AC 100–240V, 50\/60Hz.\u003c\/li\u003e\n\u003cli\u003eOutput: DC 5V.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis DaToo aquarium fan suits aquarium keepers who want directed airflow for freshwater or saltwater tanks, particularly when managing warm-weather conditions. Its adjustable wind direction, dual fixation system, and stated 5V output make it a fit for buyers who need a secured, positionable cooling fan rather than a temperature-control unit with a specified set point.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much can the DaToo Aquarium Cooling Fan lower water temperature?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The DaToo Aquarium Cooling Fan is designed to lower aquarium water temperature by 4°F–7°F (2.2°C–3.9°C), depending on weather and outside temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the DaToo Aquarium Cooling Fan be used with saltwater tanks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The DaToo Aquarium Cooling Fan is designed for both freshwater and saltwater aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DaToo","offers":[{"title":"Default Title","offer_id":67866463142279,"sku":"B09WGWD9BP","price":35.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/datoo-aquarium-cooling-fan-front-view.jpg?v=1793500876"},{"product_id":"paizoo-aquarium-cooling-fan-for-axolotl-10-30-gallon-dual-fans-and-3-speeds","title":"PAIZOO Aquarium Cooling Fan for Axolotl, 37.9–114 L, Dual Fans and 3 Speeds","description":"\u003cp\u003e\u003cstrong\u003ePAIZOO Aquarium Fan is a tank-cooling fan for axolotl and other aquariums, with dual fans, three speed modes, and a stated fit for 10–30 gallon tanks.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFor 10–30 gallon tanks — sized for the aquarium range given for this fan.\u003c\/li\u003e\n\u003cli\u003eTwo brushless motors, each reaching up to 3,600 rpm — power the dual-fan airflow.\u003c\/li\u003e\n\u003cli\u003eThree speed modes — choose soft, standard, or high airflow for different situations.\u003c\/li\u003e\n\u003cli\u003e120° air vents — direct airflow horizontally across a wider area of the water.\u003c\/li\u003e\n\u003cli\u003eAdjustable mounting and airflow direction — position the fan to suit your tank setup.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAquarium equipment can add heat to a tank, and this fan is designed to help dissipate it by moving air across the water. Its adjustable mounting and three modes make it suited to aquarium setups that need flexible airflow, including axolotl tanks.\u003c\/p\u003e\u003ch3\u003eWhat tanks is the PAIZOO Aquarium Fan designed for?\u003c\/h3\u003e\u003cp\u003eThe PAIZOO Aquarium Fan is intended for 10–30 gallon tanks and supports both freshwater and saltwater aquariums. Its dual fans send air horizontally toward the water, while the wide-angle vents increase the area reached by the airflow. This offers a practical way to add directed air movement where aquarium heat is a concern.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater and saltwater use.\u003c\/li\u003e\n\u003cli\u003eMade for aquarium cooling, including axolotl tank setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow can I adjust the PAIZOO Aquarium Fan?\u003c\/h3\u003e\u003cp\u003eThe PAIZOO Aquarium Fan has three speed settings: soft, standard, and high. Soft mode is intended for quieter nighttime operation, standard mode for general use, and high mode for faster cooling. The pure copper brushless motors are rated at 24 dB in soft mode.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach motor runs at up to 3,600 rpm.\u003c\/li\u003e\n\u003cli\u003eThe fan blades are high-density, and the air vents direct airflow horizontally.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow does the PAIZOO Aquarium Fan attach to a tank?\u003c\/h3\u003e\u003cp\u003eThe PAIZOO Aquarium Fan attaches with a removable clip that can clamp horizontally or vertically. The air outlet tilts 45° up or down, and the base rotates 360°, so you can adjust the direction of airflow. The fan uses a 26 mm clip; consider your tank’s edge and mounting position when choosing where to place it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOutlet adjustment: 45° up and down.\u003c\/li\u003e\n\u003cli\u003eBase rotation: 360°.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat comes with the PAIZOO Aquarium Fan?\u003c\/h3\u003e\u003cp\u003eThe package contains the fan and the components needed to connect and mount it. A USB cable measuring 150 cm (59.05 in) and a 5V\/2A adapter are included, along with the removable plastic clip and user manual.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOne PAIZOO aquarium cooling fan.\u003c\/li\u003e\n\u003cli\u003eOne USB cable, one 5V\/2A adapter, one removable plastic clip, and one user manual.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe PAIZOO Aquarium Fan suits aquarium keepers who want adjustable, directed airflow for a 10–30 gallon freshwater or saltwater tank, including an axolotl setup. Its dual fans, three speed modes, and flexible mounting let you tailor airflow to your tank arrangement.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tank size is the PAIZOO Aquarium Fan for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The PAIZOO Aquarium Fan is designed for 10–30 gallon tanks and is suitable for freshwater and saltwater aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is included with the PAIZOO Aquarium Fan?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The PAIZOO Aquarium Fan package includes the fan, a 150 cm (59.05 in) USB cable, a 5V\/2A adapter, a removable plastic clip, and a user manual.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PAIZOO","offers":[{"title":"Default Title","offer_id":67867540554119,"sku":"B0FB93ZV5R","price":45.34,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/paizoo-aquarium-fan-front-view.jpg?v=1793537483"},{"product_id":"paizoo-aquarium-chiller-fan-with-temperature-probe-lcd-display-and-7w-automatic-cooling","title":"PAIZOO Aquarium Chiller Fan with Temperature Probe, LCD Display and 7W Automatic Cooling","description":"\u003cp\u003e\u003cstrong\u003eThe PAIZOO Aquarium Chiller Fan is an automatic evaporative cooler for freshwater and saltwater aquariums, with a temperature probe, LCD display, and adjustable temperature control.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAutomatic temperature control — starts cooling when water rises above your selected setting.\u003c\/li\u003e\n\u003cli\u003eEvaporative cooling of 3°F–7°F (1.7°C–3.9°C), depending on ambient conditions — helps manage aquarium water temperature.\u003c\/li\u003e\n\u003cli\u003eThree airflow speeds and a 7W power draw — choose airflow to suit your cooling needs.\u003c\/li\u003e\n\u003cli\u003eTwo brushless motors with operation below 40 dB — circulate air across the water surface.\u003c\/li\u003e\n\u003cli\u003eAdjustable outlet and rotating base — direct airflow where it is needed.\u003c\/li\u003e\n\u003cli\u003eClip-on installation with no tools required — attach it to aquarium glass within the clip’s opening limit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWarm conditions can raise aquarium water temperature, so this fan is designed to provide automatic evaporative cooling without requiring repeated manual switching. It suits freshwater and saltwater setups, with adjustable airflow for summer heat, everyday use, or quieter nighttime operation. Its temperature probe and display make it possible to monitor the water and choose a target setting at the unit.\u003c\/p\u003e\n\u003ch3\u003eHow does the PAIZOO Aquarium Chiller Fan control cooling?\u003c\/h3\u003e\n\u003cp\u003eThe fan monitors water temperature with its probe and switches on when the reading exceeds your chosen setpoint. Set the target anywhere from 50°F (10°C) to 99°F (37.2°C); the fan runs until the water falls below that setting. The LCD provides a real-time temperature reading, while the automatic control handles the on-and-off cycle.\u003c\/p\u003e\n\u003cp\u003eCooling uses evaporation at the water surface, so the temperature change varies with ambient conditions. The dual fans use pure copper brushless motors rated up to 3,600 rpm each. The stated cooling effect is 3°F–7°F (1.7°C–3.9°C), rather than a fixed temperature drop for every aquarium.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSet a temperature target within the adjustable range.\u003c\/li\u003e\n\u003cli\u003eUse the live LCD reading to monitor aquarium temperature.\u003c\/li\u003e\n\u003cli\u003eAutomatic operation continues until the water falls below the selected setting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow can I adjust airflow for my aquarium?\u003c\/h3\u003e\n\u003cp\u003eChoose Low, Medium, or High speed to match the airflow to your setup and cooling needs. High increases surface evaporation for summer heat, Medium offers balanced everyday airflow, and Low is intended for quieter use at night or with small tanks. The unit draws 7W.\u003c\/p\u003e\n\u003cp\u003eFor direction, tilt the air outlet up or down by 45° and rotate the base through 360°. Its 120° wide-angle vent sends air horizontally across the water surface, supporting evaporation. This gives you options to position the airflow without changing the fan’s attachment point.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThree named speeds: Low, Medium, and High.\u003c\/li\u003e\n\u003cli\u003eOutlet adjustment: 45° up or down.\u003c\/li\u003e\n\u003cli\u003eBase rotation: 360°; vent coverage: 120° wide angle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWill the clip fit my aquarium, and what is included?\u003c\/h3\u003e\n\u003cp\u003eThe clip opens to a maximum of 26 mm (1.02 in), so compare that measurement with the aquarium glass or edge where you plan to attach the fan. Installation requires no tools: attach the clip, adjust the airflow, and plug in the unit. A foam spacer is included for thin glass.\u003c\/p\u003e\n\u003cp\u003eThe package contains the aquarium chiller fans, a temperature probe, a clip, a USB cable measuring 59 in (150 cm), a 5V\/2A adapter, and a manual. The adapter and cable provide the listed power connection, while the probe supplies the temperature input for automatic operation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum clip opening: 26 mm (1.02 in).\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: probe, clip, USB cable, adapter, manual, and foam spacer for thin glass.\u003c\/li\u003e\n\u003cli\u003eNo tools are needed for attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe PAIZOO Aquarium Chiller Fan is suited to aquarium keepers who want probe-based temperature monitoring, automatic evaporative cooling, and airflow they can direct to the water surface. Its clip-on design is intended for aquarium edges that fit within the stated opening limit, and it is made for freshwater and saltwater aquariums.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What aquarium edge thickness fits the PAIZOO Aquarium Chiller Fan clip?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The PAIZOO Aquarium Chiller Fan clip opens to a maximum of 26 mm (1.02 in); compare this with the aquarium edge where you plan to attach it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What comes with the PAIZOO Aquarium Chiller Fan?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The PAIZOO Aquarium Chiller Fan package includes the fans, temperature probe, clip, 59 in (150 cm) USB cable, 5V\/2A adapter, manual, and foam spacer for thin glass.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PAIZOO","offers":[{"title":"Default Title","offer_id":67868087910791,"sku":"B0FB96FTDJ","price":48.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/paizoo-aquarium-fan-front-view_be6797f7-8acb-42da-8367-92c39eded032.jpg?v=1793545785"},{"product_id":"jerepond-aquarium-cooling-fan-3w-dc12v-with-auto-control-and-adjustable-broad-airflow","title":"JEREPOND Aquarium Cooling Fan, 3W DC12V with Auto Control and Adjustable Broad Airflow","description":"\u003cp\u003eJEREPOND Aquarium Cooling Fan is a 3W DC12V aquarium cooling fan designed to help manage fish tank temperature, with a thermal probe and adjustable control for aquariums from 15 to 60 gallons (about 57 to 227 L).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAutomatic or manual temperature control — choose probe-led adjustment or set the fan yourself.\u003c\/li\u003e\n\u003cli\u003eAdjustable 18–36°C (65–97°F) target range — set the temperature using the controller knob.\u003c\/li\u003e\n\u003cli\u003eCross-flow fan with broad airflow — moves air across a wide area with quiet operation.\u003c\/li\u003e\n\u003cli\u003eFan angle adjusts up to 120° — direct airflow where it is needed.\u003c\/li\u003e\n\u003cli\u003eEdge mounting for tanks up to 15 mm (0.6 in) thick — fits aquarium rims within this limit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAquarium temperature can need active management as surrounding conditions change. This fan is made for fish keepers who want a choice between automatic temperature adjustment and manual control, along with an adjustable airflow direction. Its controller, probe and tank-edge mounting make the setup suitable for home aquariums within the stated capacity and rim limits.\u003c\/p\u003e\u003ch3\u003eHow does the JEREPOND fan control aquarium temperature?\u003c\/h3\u003e\u003cp\u003eThe JEREPOND Aquarium Cooling Fan can run in automatic or manual mode. In automatic mode, the thermal probe monitors the aquarium temperature and the controller adjusts the fan; in manual mode, you control operation yourself. Turn the knob to set a target within the controller’s temperature range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePower and working-status indicator lights show the controller’s status.\u003c\/li\u003e\n\u003cli\u003eThe 3W power consumption supports a low-power fan setup.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhich aquariums can this cooling fan fit?\u003c\/h3\u003e\u003cp\u003eThe JEREPOND Aquarium Cooling Fan is suitable for aquariums from 15 to 60 gallons, and mounts on an aquarium edge. The fan measures 6.9 × 2.0 × 2.3 inches (17.5 × 5.1 × 5.8 cm), so its compact body sits at the tank rim rather than requiring a separate placement inside the aquarium.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaximum mounting thickness: 15 mm (0.6 in).\u003c\/li\u003e\n\u003cli\u003eCheck the tank rim thickness against this limit before fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow is the airflow positioned?\u003c\/h3\u003e\u003cp\u003eThe JEREPOND Aquarium Cooling Fan uses a cross-flow fan to provide broad airflow, with an adjustable angle of up to 120°. This lets you change the direction of the fan after mounting it on the aquarium edge. The cross-flow design is also intended for quiet operation and longer service life.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAdjust the fan angle to direct airflow across the aquarium.\u003c\/li\u003e\n\u003cli\u003eThe fan operates from a DC12V power supply.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis fan suits aquarium owners who want adjustable temperature control and directed airflow for a tank within the stated capacity range. Its probe-based automatic mode, manual option and edge-mounted, angle-adjustable design bring temperature management into one DC12V fan setup; it is sized for aquarium rims no thicker than 15 mm.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What aquarium size is the JEREPOND Aquarium Cooling Fan suitable for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The JEREPOND Aquarium Cooling Fan is suitable for aquariums from 15 to 60 gallons (about 57 to 227 L) and mounts on rims up to 15 mm thick.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the JEREPOND Aquarium Cooling Fan adjust temperature automatically?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The JEREPOND Aquarium Cooling Fan uses a thermal probe for automatic adjustment, or you can select manual control and set a target from 18–36°C (65–97°F).\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JEREPOND","offers":[{"title":"Default Title","offer_id":67868731376007,"sku":"B0BYH63MTC","price":60.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/jerepond-aquarium-cooling-fan-front-view.jpg?v=1793560697"},{"product_id":"inkbird-itc-308s-aquarium-temperature-controller-for-freshwater-and-saltwater-dual-stage-heating-and-cooling","title":"Inkbird ITC-308S Aquarium Temperature Controller for Freshwater and Saltwater, Dual-Stage Heating and Cooling","description":"\u003cp\u003e\u003cstrong\u003eInkbird ITC-308S is a dual-stage aquarium temperature controller for managing heating and cooling equipment, with high- and low-temperature alarms.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControls heating and cooling devices together — coordinate both types of equipment from one controller.\u003c\/li\u003e\n\u003cli\u003eCorrosion-protection function — suited to freshwater and saltwater aquariums, coral tanks, ornamental shrimp and tropical fish setups.\u003c\/li\u003e\n\u003cli\u003eTwo temperature display windows with Celsius or Fahrenheit options — view the measured and set temperatures at the same time.\u003c\/li\u003e\n\u003cli\u003eHigh- and low-temperature alerts plus a sensor-failure alarm — get an alert for these temperature or sensor conditions.\u003c\/li\u003e\n\u003cli\u003eMaximum output load of 1200 W at 110 V — gives a clear output limit when choosing connected equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAquarium temperature equipment needs control that suits the tank and the devices being used. The ITC-308S is designed for freshwater and marine environments, including coral tanks, and for aquariums housing ornamental shrimp or tropical fish. It can operate heating and cooling devices at the same time, or be used to control a single heating device or a single cooling device. This gives the controller more than one use across aquarium temperature setups.\u003c\/p\u003e\n\u003ch3\u003eCan it control both a heater and a cooling device?\u003c\/h3\u003e\n\u003cp\u003eYes. Inkbird ITC-308S can control a heating device and a cooling device at the same time, including a cooling appliance such as refrigeration. It can also control just one heating or cooling device when that is the setup you need. Match the connected equipment to the controller’s electrical limits before use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFor paired use, connect heating and cooling equipment as the two controlled device types.\u003c\/li\u003e\n\u003cli\u003eFor single-device use, choose either a heater or a cooling device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat temperatures can I see on the display?\u003c\/h3\u003e\n\u003cp\u003eThe two display windows show the measured temperature and the set temperature simultaneously. The temperature display can be set to Celsius or Fahrenheit, so you can read both values in the unit you use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne window shows the measured temperature.\u003c\/li\u003e\n\u003cli\u003eThe other window shows the temperature setting.\u003c\/li\u003e\n\u003cli\u003eChoose Celsius or Fahrenheit for the temperature display.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat electrical limits should I allow for?\u003c\/h3\u003e\n\u003cp\u003eThe controller’s input power is 100 to 240 VAC at 50 or 60 Hz, and its maximum current is 10 A across 100 to 240 VAC. The maximum output load is 1200 W at 110 V. Use these ratings to confirm that the heating or cooling device you intend to control is within the controller’s limits.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput frequency: 50 Hz or 60 Hz.\u003c\/li\u003e\n\u003cli\u003eMaximum current: 10 A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInkbird ITC-308S suits aquarium keepers who want one controller for temperature equipment in freshwater or saltwater settings, including coral tanks and tanks for ornamental shrimp or tropical fish. Its dual temperature display, selectable Celsius or Fahrenheit readout, and stated electrical limits make its role and operating range easy to understand. It is intended for aquarium heating or cooling control, with the connected device kept within the controller’s ratings.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the Inkbird ITC-308S control aquarium heating and cooling at the same time?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Inkbird ITC-308S aquarium temperature controller can control a heating device and a cooling device simultaneously, or control one heating or cooling device on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which aquarium setups is the Inkbird ITC-308S suitable for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The Inkbird ITC-308S aquarium temperature controller is suited to freshwater and saltwater aquariums, coral tanks, and setups for ornamental shrimp or tropical fish.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Inkbird","offers":[{"title":"Default Title","offer_id":67870720917895,"sku":"B07R195CQF","price":55.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/inkbird-aquarium-temperature-controller-front-view.jpg?v=1793579378"},{"product_id":"innovative-marine-helio-ptc-heater-holder-single-magnetic-aquarium-mount","title":"Innovative Marine Helio PTC Heater Holder, Single Magnetic Aquarium Mount","description":"\u003cp\u003e\u003cstrong\u003eInnovative Marine Helio PTC Heating Element Holder (Single) is a magnetic holder for securing one compatible heater, with a maximum heater diameter of 0.96 in (2.44 cm).\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSingle-heater design — holds one heater in place.\u003c\/li\u003e\n\u003cli\u003eCell-cast acrylic holder — provides the holder body.\u003c\/li\u003e\n\u003cli\u003eRare earth neodymium magnets — attach the holder magnetically.\u003c\/li\u003e\n\u003cli\u003eHeat-resistant silicone inserts — sit where the heater meets the holder.\u003c\/li\u003e\n\u003cli\u003eHorizontal or vertical setup — lets you position the holder while maintaining an arrangement designed for optimal water flow.\u003c\/li\u003e\n\u003cli\u003eFits glass up to 12 mm thick — gives a clear glass-thickness limit for choosing the holder.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis holder is made for positioning a compatible heater in a glass aquarium setup. It is a practical choice when you need a dedicated mount rather than relying on the heater alone to stay positioned. The product is the holder only: a heater is not included.\u003c\/p\u003e\u003ch3\u003eWhich heaters fit the Innovative Marine Helio PTC holder?\u003c\/h3\u003e\u003cp\u003eThe holder accommodates one heater measuring 0.96 in (2.44 cm) in diameter or less. Compare the heater’s diameter with this maximum before choosing the holder; the design is for a single heater, not multiple heaters.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaximum heater diameter: 0.96 in (2.44 cm).\u003c\/li\u003e\n\u003cli\u003eQuantity: one heater holder.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow does the holder attach, and what glass thickness does it fit?\u003c\/h3\u003e\u003cp\u003eRare earth neodymium magnets provide the magnetic attachment, and the holder is suitable for glass up to 12 mm thick. Its dimensions are 3.71 in (9.42 cm) long × 2.57 in (6.53 cm) wide × 1.70 in (4.32 cm) high. The magnet dimensions are 3.71 in (9.42 cm) long × 0.62 in (1.57 cm) wide × 3.72 in (9.45 cm) high.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHolder material: cell-cast acrylic.\u003c\/li\u003e\n\u003cli\u003eMagnet type: rare earth neodymium.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCan the holder be positioned horizontally or vertically?\u003c\/h3\u003e\u003cp\u003eYes. The holder can be set up horizontally or vertically, with its arrangement designed for optimal water flow. Heat-resistant silicone inserts are part of the holder, where they meet the heater.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePositioning options: horizontal or vertical.\u003c\/li\u003e\n\u003cli\u003eHeater is not included; this product is the holder only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis single-heater mount suits aquarium owners whose heater falls within the stated diameter limit and whose glass is no thicker than 12 mm. Its magnetic attachment, silicone inserts and two setup orientations make it a holder designed around heater placement and water flow.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What heater diameter fits the Innovative Marine Helio PTC Heating Element Holder?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The Innovative Marine Helio PTC Heating Element Holder fits one heater with a diameter of 0.96 in (2.44 cm) or less.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the Innovative Marine Helio PTC Heating Element Holder include a heater?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The Innovative Marine Helio PTC Heating Element Holder includes the holder only; a heater is not included.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Innovative Marine","offers":[{"title":"Default Title","offer_id":67870974869895,"sku":"B08ZJXFYNT","price":69.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/innovative-marine-helio-ptc-holder-front-view.jpg?v=1793584499"},{"product_id":"hygger-1200w-submersible-aquarium-heater-160-300-gallon-lcd-control-auto-shutoff","title":"hygger 1200W Submersible Aquarium Heater, 606–1,136 L, LCD Control \u0026 Auto Shutoff","description":"\u003cp\u003e\u003cstrong\u003eThe hygger Submersible Aquarium Heater is a 1200W heater for maintaining water temperature in 160–300 gallon (606–1,136 L) saltwater and freshwater aquariums.\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHanging LCD controller — view readings and set a target temperature outside the tank.\u003c\/li\u003e\n\u003cli\u003eWater-level sensor — shuts the heater off and sounds an alarm if the water level is too low.\u003c\/li\u003e\n\u003cli\u003eDouble sensing probe — triggers an automatic response to temperature conditions outside its operating range.\u003c\/li\u003e\n\u003cli\u003eQuartz glass heating tubes and nickel-chromium wire — provide the heating system inside the unit.\u003c\/li\u003e\n\u003cli\u003eHollowed ABS guard and two suction cups — help diffuse heated water and secure the heater to the tank wall.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKeeping aquarium water at a chosen temperature calls for adjustable control and clear alerts when conditions need attention. This heater is designed for larger saltwater or freshwater tanks, with a submersible heating element and a controller that hangs outside the aquarium for convenient viewing and adjustment.\u003c\/p\u003e\u003ch3\u003eHow do I set and monitor the water temperature?\u003c\/h3\u003e\u003cp\u003eSet the target from 59°F (15°C) to 93°F (34°C) using the external controller’s large LCD screen. The display shows the current water temperature and real-time power, while a red indicator signals when the heater is heating.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe controller presets the desired temperature.\u003c\/li\u003e\n\u003cli\u003eTemperature deviation is 1°F (0.6°C).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat safety features respond to low water or overheating?\u003c\/h3\u003e\u003cp\u003eA sensor at the top of the heating unit detects when the water level falls below it and automatically switches off the heater while sounding an alarm. If power returns after an outage, the memory function restores the temperature setting.\u003c\/p\u003e\u003cp\u003eThe double sensing probe monitors for temperature conditions outside the measurable range. Above 95°F (35°C), the heater shuts off and displays an “HH” alarm; below 59°F (15°C), it displays “LL” and heats toward the preset temperature.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe low-water sensor is located at the top of the heating unit.\u003c\/li\u003e\n\u003cli\u003eThe “HH” and “LL” codes identify the corresponding temperature alert.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow should I position the heater in the aquarium?\u003c\/h3\u003e\u003cp\u003eFully submerge the heating element at least 2 inches (5.1 cm) underwater, with the top of the unit facing upward so its probe can sense the water level. Attach the heater to the tank side using its two suction cups.\u003c\/p\u003e\u003cp\u003eDual-tube quartz glass and high-temperature-resistant nickel-chromium heating wire form the heating system. The irregular hollowed design of the ABS guard helps disperse heated water and helps protect aquatic pets from contact with the heater.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUse the heater fully submerged, with the sensing end facing up.\u003c\/li\u003e\n\u003cli\u003eThe guard surrounds the heating element.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe hygger Submersible Aquarium Heater suits aquarium keepers with 160–300 gallon saltwater or freshwater tanks who want adjustable heating and built-in low-water and temperature alerts. Its external display, submersible heating unit, and automatic safety responses bring temperature control and monitoring together in one heater.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the dimensions of the hygger Submersible Aquarium Heater?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The hygger Submersible Aquarium Heater measures 11.6 × 2.7 × 1.2 inches (29.5 × 6.9 × 3.0 cm). It includes two suction cups for tank-wall mounting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What power supply and cord lengths does the hygger aquarium heater use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The hygger Submersible Aquarium Heater operates on AC 100–240V and has a 6.2 ft (1.9 m) + 3.9 ft (1.2 m) power cord.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"hygger","offers":[{"title":"Default Title","offer_id":67871125143943,"sku":"B0CKR8814J","price":106.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/files\/hygger-submersible-aquarium-heater-front-view.jpg?v=1793588693"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1108\/7619\/7255\/collections\/paizoo-aquarium-fan-front-view.jpg?v=1793656499","url":"https:\/\/ardentpets.co.uk\/collections\/aquarium-heaters.oembed","provider":"ArdentPets","version":"1.0","type":"link"}