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Hi All, I have followed Nitro's advise on hot tub chemistry over several years with great success. I recently purchased a Hotsprings tub with the ACE salt water sanitizing system. It calls for the following parameters: Salt - 1750 ppm Hardness - 50 ppm Alkalinity - 80 ppm pH - 7.4 Chlorine - 3 ppm When I plug these numbers into the Pool Calculator, it gives me a Calcite Saturation Index of -.86, which is way lower than Nitro's suggested 0-ish. Does anyone know, if I dial my water in to these levels, what the possible negative affects will be? Thanks in advance