I am relatively new at chemistry for hot tubs. I am somewhat confused on what is considered the ideal and also too high levels for calcium in hot tubs? I have read for example in the 'water chemistry guidelines' from the National Swimming Pool Foundation for Pool & Spa operators that I obtained from the Taylor Technologies website that the ideal range for Spas is 150-250. However I have read here that perhaps that is too high and the range is more like 120-150? I have a Caldera Palatino model hot tub which I think is an acrylic based shell and currently my CH is 200-225? Is this too high?
I appreciate any and all help on this issue.