Rx Clear Stabilized Granular Chlorine | One 8-Pound Bucket | Use As Bactericide, Algaecide, and Disinfectant in Swimming Pools and Spas | Slow Dissolving and UV Protected CLEAR WATER FOR SAFE SWIMMING - Swimming in crystal clear water does not mean your skin has to suffer. The granular chlorine is 99% sodium diclor making a relaxing swim not as harsh. LONG LASTING - Dichlor resists UV light, lasting longer than other types of chlorine due to built in stabilizer DISSOLVES QUICKLY - Add 1 oz to your pool for every 5,000 gallons your pool contains, daily for quick water treatment FEWER CHEMICALS NEEDED - Our dichlor is pH neutral, meaning less chemical adjustments to be made by you! GENTLE ON LINERS - Dissolves in a 4-foot column, no need to worry about bleaching your liner as with chlorine tabs