Low calcium hardness in your pool's water can lead to damage on your fixtures and equipment. Use the Robelle Calcium Plus to raise the level almost instantly to help keep your pool in tip-top shape.Product Features:Use to raise calcium hardness in your pool's waterLow calcium hardness can lead to corrosive damage on equipment and fixtures and cause stainsAdd 6.25 lbs. per 10,000 gal. to raise the hardness levels approximately 50 ppmIncludes one 25-lb. containerWarranty: 30 days limited
(Model 2825)Keep out of reach of children.