hygger Aquarium Sponge Filter, 3.5W for 37.9–151 L Tanks with Adjustable Flow

The hygger Electric Aquarium Sponge Filter is a 3.5W aquarium filter designed to support water filtration and circulation in 10–40 gal (38–151 L) fish tanks, with a dual-sponge design and ceramic bio media.

• Ribbed dual sponges and a chamber of bio ceramic balls — provide two stages of filtration to capture debris and support aquarium water quality.
• 3.5W submersible pump operating below 30 dB — filters with low power use and quiet operation for home or office tanks.
• Venturi nozzle and adjustable rain-mode outlet — let you choose between outlet styles, including a gentler flow for shrimp and fry.
• 360° rotatable, retractable outlet pipe — directs water where you want it and can extend above the surface for a waterfall effect.
• Two spare sponges and bio-media balls included — provide replacement sponges and biological media for ongoing filter use.

For a small aquarium, choosing filtration also means considering current strength, oxygenation, and how much equipment the setup requires. This electric sponge filter combines mechanical and biological filtration with adjustable water output, and its built-in pump works without an airline or external air pump. It is made for freshwater or saltwater aquariums in the stated tank-size range, with outlet options suited to setups that need a gentler current.

How does the hygger filter clean aquarium water?

The filter passes aquarium water through ribbed sponge surfaces and a chamber filled with ceramic bio media. The sponge surfaces catch debris, while the media provides a place for beneficial biological filtration. The submersible pump also circulates water through the unit, supporting circulation and aeration.

• The double-ribbed sponge shape adds water-contact area.
• The Venturi air nozzle adds oxygenation to the water.

Can I adjust the flow for shrimp, bettas, fry, or plants?

Yes. Choose the Venturi nozzle or the adjustable rain-mode spray bar to suit the current you want in the aquarium. The outlet pipe rotates through 360° and retracts, so you can direct the flow or extend it above the water for a gentle waterfall.

• The Venturi outlet produces a smaller, slower flow, making it suitable for fry and shrimp.
• The rain-style spray bar offers adjustable flow for delicate fish and plants that prefer lower current.

What is included, and how do I set it up?

The hygger filter includes the assembled filter components, two replacement sponges, and bio-media balls. Attach the unit inside the tank with the included suction cups, then plug it in; no separate air pump or airline is needed.

• Remove the two spare sponges from the filter chamber before operating the unit.
• For cleaning, disassemble the filter and rinse the reusable sponges in aquarium water.

This filter suits aquarium keepers who want an internally mounted powered sponge filter with selectable outlet flow and no external air pump. Its stated fit is 10–40 gal (38–151 L) tanks, and its adjustable outlets accommodate both gentle-flow setups and directed circulation.

Read our guide: Signs of illness in aquarium fish, and how to quarantine new arrivals