Aqua Rite Electronic Chlorine Generators (also known as salt chlorinators) are the largest selling system in the world. They automatically produce pure chlorine every day while the pool is being filtered and distribute it evenly throughout the pool via the return jets. Aqua Rite generators use a low concentration of salt dissolved in the pool water (below the level of taste) to produce up to 1.45 lbs of chlorine daily, enough for all residential pools up to 40,000 gallons. They are also NSF certified and approved for use on commercial and public pools. They easily install on standard filtration systems, both for new construction and on existing pools.