CCH Endurance 3" Cal Hypo Chlorine Tablets 25 lb Pail | 23227

CCH® endurance tablets are non-stabilized, and do not contain cyanuric acid. Stabilized sanitizers like trichlor contain cyanuric acid. Cyanuric acid can help stabilize ph and will be measured in a pool water total alkalinity test, but carbonate alkalinity is needed to protect pool surfaces. Low carbonate alkalinity can lead to corrosion and plaster damage. The calcium in CCH® endurance tablets helps to protect the plaster, extending the life of the pool.