Hth 42011 Super 3 Tablets Swimming Pool Chlorine, 15 Lbs

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