Solaxx CLG928A PoolTux Above Ground Salt Chlorine Generator 28K gal uses salt to sanitize your pool water using your existing pool pump and filter. Designed for use on pools up to 28,000 gallons, the salt cell connects to the outside of your pool’s return fitting using fittings provided in the box. No special tools are required and the entire system installs in minutes. The power supply plugs in to a 110V GFCI outlet and features LED indicator lights for an instant snapshot of the system status.