ALEGI Aquarium Bio Sponge Filter Kit for for 40-80 Gallon 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 damage due to power outage. It is a great way to clean and oxygenate your fish tanks. Recommend tank size: 40 - 80 Gallon Includes: 1 Pcs of sponge filter, 4 feet air tubing, 1 Non-rutrun check valves, 4 suction cups, 1 Y-connector