25 2.5 Gal 12.5% Sodium Hypochlorite offers powerful disinfection and oxidization for pool and spa water. Buckman's Sodium Hypochlorite is designed to clear cloudy water by killing bacteria and destroying contaminates. Whether being used for new pools or spring openings, regular water maintenance, or as part of the winterization process, Buckman's Sodium Hypochlorite is perfect for any pool or spa.