Keep your pool water clean this summer with the Intex 2,500 GPH Krystal Clear Filter Cartridge Pump! Boasting a pump flow rate of 2,500 gallons per hour and a system flow rate of 1,900 gallons per hour, this pump will circulate and filter the water in your above ground pool to keep water clear and refreshing, 28633EG. Maintenance for this pump is a breeze: simple replace the old cartridge with a new one every 2 weeks. It uses Type B filter cartridges (Item #29005E) which should be changed every couple of weeks. -Hydro Aeration Technology by Intex transforming the Above Ground Pool industry, by bringing revolutionary water aeration techniques into your backyard above ground pool. -Benefits include: Improved circulation and filtration Improved water clarity Increased negative ions at the water surface