Hth, 35 lb, 3" stabilized chlorine tablets, sanitizes pool water, stabilized, sun protected for extended chlorine life, for use in skimmer or floater, protects against bacteria & algae growth, active ingredients: trichlors-s-triazinetrione 92.4%, zinc sulfate monohydrate 3.5%, other ingredients 7.6%, available chlorine 84%.
- Chlorinates up to one week
- Contains built-in resistance to sunlight
