AQUANEAT Aquarium Sponge Filter Up 20 Gal

Sponge filters have been around for decades and there’s a reason these filters are so popular. Sponge filters do an excellent job of clearing impurities from aquarium water and are amazingly simple and inexpensive to operate.  Features: •  For freshwater and saltwater aquariums •  Install with either an air pump or a powerhead •  Provides reliable filtration in fry aquariums and quarantine systems •  Add extra biological filtration in heavily stocked aquariums •  Models designed for virtually any size system  Sponge filter provide both mechanical and biological filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility 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 dwarf cichlid, guppy, killifish etc., or for hatcheries, maternity tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter.