5 Lb. Chlorine Neutralizer Granule

Lowers excessively high chlorine levels (which can be harmful to swimmers) that may occur after superchlorination or inadvertent addition of too much chlorine. 2 Oz. of neutralizer per 10,000 Gal. of water will reduce chlorine level by 1 ppm (parts per million). Contains 100% sodium thiosulfate crystals.