Enforce Stain & Scale Remover
Enforce bonds with dissolved metals to prevent the formation of scale. It even removes existing scale and lifts existing metallic stains. Use when water hardness exceeds 50 ppm. Add to pool water in the spring before chlorination while pool is being filled. Enforce should also be used prior to adding Eclipse3 Algicide, as this will prevent existing metals from creating stains. Add one bottle (32-fl. oz.) per 20,000 gallons of water. Use of Enforce at the rate of 5-fl. oz. per 15,000 gallons each week provides on-going protection.