CARIBBEAN BLUE Algaecide + Clarifier helps maintain clean, clear, and algae-free pool water. This non-foaming formula eliminates all types of algae and slimes, including green, mustard, and black algae, while also enhancing water clarity! Supporting weekly routine pool maintenance, this product works with all pool types, including saltwater systems. For clean or freshly filled pools, add 18-28 oz. per 10,000 gallons of water. For weekly maintenance, apply 8-12 oz. per 10,000 gallons of water. After heavy rain, use 6 oz. per 10,000 gallons of water. Apply directly to pool water with the pump running. Maintain pH between 7.4-7.6 and chlorine levels between 1-3 ppm for best results.