Shop aquarium sponge filters for fancy goldfish, bettas, and shrimp. Sponge filters give gentle water flow and strong biological filtration, which is what delicate fish and shrimp need. They are simple, quiet, and safe for shrimp and baby fish, because there is no strong intake to pull them in.
Gentle flow suits fancy goldfish and bettas, which are not strong swimmers.
Safe for shrimp and baby fish.
Grows beneficial bacteria that keep the water clean.
Low cost and easy to clean.
Sponge Filter Care Tips
Sponge filters run on an air pump and airline tubing.
Squeeze the sponge in old tank water, not tap water. Chlorine in tap water can kill the helpful bacteria.
Clean the sponge every 2 to 4 weeks, or when the flow slows down.
Do not replace the sponge often. The bacteria live in it.
Sponge Filter FAQ
Do sponge filters work for goldfish? Yes, with enough tank space and regular water changes. Goldfish make a lot of waste, so many keepers add a second filter in larger tanks. See our fancy goldfish.
Do I need an air pump? Yes. A sponge filter needs an air pump to move water through the sponge.
Are sponge filters safe for shrimp? Yes. They are one of the safest filters for shrimp and baby shrimp. See our shrimp.
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