The Aqua Trol® chlorine generator designed specifically for the above ground pool. Your pool's water quality will be unmatched with the Aqua Trol system. Now you can have crystal clear, silky smooth water at an affordable price. Our AquaTrol® chlorine generator takes a low concentration of common salt in the pool water and converts it into chlorine without all the harsh side effects. No more red irritated eyes, dry itchy skin, or chlorine smell. The Aqua Trol® has a built in time clock that allows you to control your filtering time and your chlorine production saving money by reducing filtering costs and never buying chlorine. It couldn't be any easier to own a pool!