Description
4pcs Small Aquarium Bio Sponge Filter with Suction Cups, Check Valves for 5 Gal, 10 Gal, 20 Gal Breeding Fry Betta Shrimp Fish Tank Sponge filter provide both mechanical and biological filtration Easy top set up & clean: simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water Using an air hose, connect one end to you air pump and the other end to this filter,and equipped with a check valve on air hose, to prevent water backflow and air pump
