Clorox Pool&Spa Calcium Increaser Pool Water Balancers Granules, 4 lb Bag

Clorox Pool&Spa Calcium Hardness Increaser raises low Total Hardness levels in your swimming pool that can cause damage to your pool surface. Ideal for plaster pools & soft water areas. Use Clorox Pool&Spa Calcium Hardness Increaser to raise total hardness levels in your pool that are below 175 ppm. Increasing Total Hardness in your pool prevents surface damage like corrosion, staining, and etching. Ideal for plaster pools and soft water areas. 5 lbs. per 10,000 gallons will raise increase your Total Hardness levels by 50 ppm. Most DIY pool owners find the best time to apply a Total Hardness increaser is during their regular maintenance routine. Once a week, start your routine by testing your pool water with test strips or a liquid test kit. Based on the results, apply necessary product including a sanitizer, shock and balancers. As long as you routinely give your pool the chemicals it needs, you'll be able to enjoy it all season long.