ALEGI 4pcs Large Aquarium Sponge Filter with Suction Cups, Check Valves for Breeding Fry Betta Shrimp Fish Tank (Medium for 20-50 Gal 4 Pcs)

Sponge filter present each mechanical and organic filtration
Straightforward prime arrange & clear: merely set up an airline into the unit and activate the air pump, merely rinse and squeeze sponge in tank water
Utilizing an air hose, join one finish to you air pump and the opposite finish to this filter,and outfitted with a verify valve on air hose, to forestall water backflow and air pump injury resulting from energy outage. It’s an effective way to scrub and oxygenate your fish tanks.
Suggest tank dimension: 10 Gallon
Consists of: 4 Pcs of sponge filter, 4 Non-rutrun verify valves,4 contral valves, 4 suction cups