Bestway 58116US Filter Pump, 800-Gallon Double insulated premium filter pump Easy to operate -simply turn on the pump for 6 hours a day lve for the air trapped inside the chamber Double insulated premium filter pump Easy to operate-simply turn on the pump for 6 hours a day Valve for the air trapped inside the chamber Easy to operate -simply turn on the pump for 6 hours a day lve for the air trapped inside the chamber