hygger 25W UV Aquarium Internal Filter for 114–492 L Tanks with Timer

The hygger 25W Aquarium U-V Internal Filter combines aquarium filtration, U-V light and water movement in one internal unit, with a maximum flow of 450 GPH.

• Fits 30–130 gallon aquariums — sized for a broad range of tank capacities.
• Four functions in one unit: filtration, oxygen increase, green-water cleaning and water circulation — supports several aquarium needs with one filter.
• Separate pump and U-V light switches, plus 4-, 8-, 12- and 24-hour timer settings — lets you control the pump and light independently.
• Two outlet options — choose aeration or rainfall-style water flow.
• For freshwater and saltwater aquariums — suitable for either aquarium type.

Cloudy or green aquarium water can make it harder to see into the tank. This internal filter combines a sponge to catch residues and other impurities with U-V light for green-water cleaning, while also moving and oxygenating the water. Its controls and outlet options let you choose how the unit operates for your aquarium.

How does the hygger filter help with cloudy or green water?

The sponge catches residues and other impurities, while the U-V lamp helps clear cloudy and green water. The stated clearing time is 3–8 days, depending on tank size and water quality; results can therefore vary with aquarium conditions.

• For a green-water episode, run the U-V light for 24 hours for 3–5 consecutive days.
• For daily maintenance, the recommended U-V light setting is 4 hours.
• The plastic shell and sponge help prevent light leakage, and an observation window lets you monitor whether the light is operating.

How can I adjust aeration and water circulation?

The filter has two water outlets: an aerating mode and a rainfall mode. In aerating mode, an air venturi and adjustable tubing add oxygen to the water; in rainfall mode, a spray bar spreads filtered water across the surface.

• The spray bar creates gentle surface agitation as it disperses water.
• Water circulation and oxygen increase are built into the filter’s four functions.
• You can switch off the U-V light separately when you want to run the pump and filtration without the light.

Which aquariums is this internal filter suited to?

The hygger filter is designed for tanks holding 30–130 gallons and can be used in freshwater or saltwater aquariums. Its internal format combines the pump, sponge and U-V light in a single aquarium filter.

• Power: 25W; maximum flow: 450 GPH.
• The timer controller offers 4-, 8-, 12- and 24-hour light settings.
• The pump and U-V light have independent switches.

This filter suits aquarium keepers who want filtration, water movement and oxygen increase in one unit, with separate control of the U-V light and pump. It is made for freshwater and saltwater tanks within its stated capacity range, with aerating and rainfall outlets for different water-flow setups.

Read our guide: A beginner’s aquarium set-up checklist: from bowl to tank