Aquaneat Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank 20 gal

The sponge filter is a mechanical filter and the surface of all the bubbles or pockets in the sponge provide biological filtration. Sponge filter produces minimal current and has almost no way to suck the fish through the filter which is excellent for small size fish. And it is very easy to use, just connect the unit with an air pump thru airline tubing and turn on the pump. Note: You need to squeeze the sponge several times in tank water for easy sinking.

Sponge filter provide both mechanical and bio filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility Safe for fish: soft sponge material, traps floating debris and won't suck up your fish Easy to set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water Recommend tank size: up to 20 gallon, excellent for small size fish like betta, dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, nano tanks and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter Includes: 1 PC of sponge filter; Dimension: 3.0"D X 6.5"H