The Bestway Flowclear Chlorinator only uses salt, so you no longer have to worry about chemicals & their levels! Since only salt is used, the Bestway Chlorinator is environmentally friendly & produces a maximum amount of 12g of pure chlorine per hour. It has been proven to be less dangerous & harmful to normal chlorine & can protect your skin, hair & eyes by being healthier than regular chlorine. Working by separating the salt into sodium & chloride, the Bestway Chlorinator converts salt to pure chlorine. As the filtering water from the pool passes through, the pure chlorine dissolves into the water; resulting in clean & healthy pool water. With a titanium-coated electrolytic cell, the Bestway Chlorinator is self-cleaning to provide optimum performance & saves you a lot of time!*NO SALT INCLUDED*