You should keep your pool or spa's Calcium Hardness at 150-250 parts per million . Calculate. I need to add this much Hardness Increaser (Calcium Chloride . Pool Calculator helps you keep calculate your pool's chemical needs. Water and Chemistry Adjustment Calculators. Increase Chlorine (Calcium Hypochlorite - 67%). Pool Volume (gallons) Desired Free-Available Chlorine (PPM) Jul 6, 2015 - Our pool chemical calculator will help you understand all the what's and why's. . it becomes sunscreen for you pool so that less, if at all any chlorine gets . waters saturation index (the two others being alkalinity and calcium hardness). . your pool to get that beautiful silky smooth feeling while swimming. Nov 20, 2017 - His article explains how to properly add calcium to a swimming pool . Pool Dosing Calculator · Procedures Pages:Pool Stain Treatment I live in Orange County, California, and our weather is pretty awesome, most of the year. . The Orenda app will tell you exactly how much calcium chloride you need. May 20, 2016 - If I assume that it is at zero, pool calculator says to add 8 lbs of CYA. But, I don't . 2. CH is at 50. Pool calculator recommends 48 lbs of calcium chloride to get it to 260. . Pretty unusual for your CH to be so low. You are not . Feb 28, 2009 - I now have a sparkling clear and beautiful pool. . Calcium chloride is best distributed (sprinkled, tossed) across the entire surface of the pool. . If you want you can use my Pool Calculator to see what volume of powder you . Aug 29, 2016 - Keeping your pool water properly balanced is one of the most . You can increase your CH with calcium chloride or calcium chloride dihydrate. is a salt of Calcium and Chlorine - chemical formula CaCl², used in pools and spas to increase Calcium Hardness. It has lots of uses in industry: - from acce.