Intex Krystal Clear 2800 GPH Sand Filter Pump with Auto Timer - For Above Ground PoolsKeep your pool water sparkling clean and hassle-free all season with the Intex Krystal Clear 2800 GPH Sand Filter Pump. Built for above-ground pools up to 17,200 gallons, this powerful system delivers superior water circulation and clarity compared to standard cartridge filters.Forget the hassle of constantly replacing cartridges-this sand filter is virtually maintenance-free, requiring sand replacement only once every 5 years. Setup is quick and simple: just connect the hoses, plug it in, and enjoy cleaner water (partial assembly required).Featuring Hydro Aeration Technology, the system improves circulation, boosts filtration efficiency, enhances water clarity, and increases negative ions for a fresher swimming experience.The 6-function control valve lets you filter, backwash, rinse, recirculate, drain, or close the system with ease. A built-in 24-hour automatic timer includes 2-12 hour pre-set cycles, helping you maintain your pool without the extra work.