Pools Level 1 Manual

How much calcium chloride would you add to bring the hardness level to ideal (200 ppm)? Eastly Pool has a volume of 660,000 litres. It has a pH of 7.5, total alkalinity of 170 and calcium hardness of 200. How much muriatic acid would you add to bring the total alkalinity to ideal (100 ppm)? ................
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