Bare Ground PCAL-40 CalPlus Calcium Hardness Increaser for Swimming Pools & Spas - 40 lbs (Pack of 2) - Raises Calcium Levels, Prevents Corrosion & Cloudy Water - Ideal for Pool Maintenance & Water Balancing

pBare Ground CalPlus brings your soft pool water to a normal calcium hardness level. It helps prevent corrosion, etching, and pitting of concrete surfaces as well as preventing the damage to pool and equipment caused by soft water. Simply scatter over the surface of your pool for quick and easy dissolving. Just 1.25 lbs. per 10,000 gallons of water will raise hardness 10 ppm, keeping pool water in the ideal range of 200 - 400 ppm.