The Intex Krystal Clear Sand Filter Pump & Saltwater System CG-26679EG, 110-120V with GFCI, 2650 PGH 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. In combination with 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 4,800 gallons and a maximum water capacity of 15,000 gallons