The strong and reliable Intex 2500 GPH Pump features a built-in automatic timer that allows you to set a daily cleaning cycle convenient to you. Easily track the health of your cartridge filter, thanks to this filter pump's convenient color-based gauge indicator. There's even a built-in, automatic timer to start and stop operation on a schedule. A must have accessory to the Krystal Clear Cartridge Filter Pump, this filter cartridge is made with easy-to-clean Dacron paper for the ultimate filtration. For maximum efficiency, replace cartridges every two weeks. Features: Patented Hydroaeration technology injects air into the water for improved water circulation, clarity and freshness. Cartridge gauge indicator toggles between green, yellow and red so you know when to change your filter. Convenient air release valve for easy pump priming. Auto timer for convenience and accuracy. Water inlet jets for enhanced water flow back into the pool. Sediment flush valve. Double-insulated pump. 2,500 GPH (9,453L) total output power. Pump works with 1.5-inch hoses.