Features: 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: simply install an airline into the unit and turn on the air pump Easy to clean: simply rinse and squeeze sponge in tank water Recommend tank size: up to 60 gallon, excellent for small size fish like betta, dwarf cichlid, guppy, killifish, glofish 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 piece of sponge filterIncludes: 1 PC of sponge filter; Dimension: 2.0"D X 4.75"H. Recommend tank size: up to 10 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. 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. Safe for fish: soft sponge material, traps floating debris and won't suck up your fish. Sponge filter provide both mechanical and bio filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility.Best Sellers Rank: See Top 100 in Pet Supplies. : B06Y5Z6V8Z. Manufacturer: AQUANEAT. Date First Available: January 5, 2018. Item model number: SF-A135. Package Dimensions: 2.99 x 2.44 x 2.44 inches; 2.4 Ounces. Is Discontinued By Manufacturer: No.