HTH 42011 Super 3-Inch Chlorine Tablets for Swimming Pools – 15 lb Bucket | Long-Lasting Pool Sanitizer for Crystal Clear Water | Ideal for In-Ground & Above-Ground Pools

Hth (high test Hypochlorite) 3 in. Super 4-in-1 chlorinating tablets sanitize, protect against the sun, controls algae, & clarifies. For use in feeders. Designed to dissolve slowly. Active ingredients: tricolors-s-triazinetrione 93.6%, zinc sulfate Monohydrate 3.5%, Other ingredients 2.9%, available chlorine 84%.

Super 4-in-1 chlorinating tablets sanitize, protect against the sun, controls algae, and clarifies