RFW1010 Features: * PH increaser * Slows the rapid loss of chlorine caused by low pH and slows chlorine dissipation, so your pool uses less chlorine * Stops eye irritation, etching and corrosion caused by low pH * Contains sodium carbonate "soda ash" * Recommended dosage: 1 lb per 10,000 gallons * Ideal pH range is 7.2 to 7.6 ppm Dimensions: * Dimensions: 11.5"" H x 13"" W x 13.5"" D