The Intex Krystal Clear Sand Filter & Saltwater System Combo Filter Pump CG-26675EG, 110-120V with GFCI, 2,100 GPH Pump Flow Rate, is an all-in-one unit that both cleans and sanitizes pool water. Sand Filters are the most efficient, desirable, and affordable methods of cleaning pool water. All-natural sand provides excellent water filtration, and with proper maintenance, can last up to five years and In combination with a Salt Water System, which uses the same sanitation technology as many resorts, community, and in-ground pools, your pool water will be kept free of bacteria and algae for the ultimate swimming experience. The Intex Sand Filter & Saltwater System works best on Above Ground Pools that hold a minimum water capacity of 2,600 gallons and a maximum water capacity of 8,500 gallons