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Would there be a problem using calcium hypochlorite for sanitizing and shocking a hot tub. I understand the pH issues. Pros and cons?
BYW Tony, My 2007 Optima is really nice. I couldn't be happier. I noticed you had an optima also...any regrets?
Lithium is sold in the states! (SEABOARD INDUSTRIES). Lithium is an alkaline based shock so no harm done to heaters and seals.
CA is good in a pool when inbetween 25-30 ppm. When that level reaches above 100 the difference between your total chlorine and free chlorine will be wide. Your pool may demand the chlorine or even be green and cloudy but the CA level is so high the chlorine stays locked. The only way to free up some chlorine would be to do a water exchange I believe. The store I purchased my hot tub from tought me this. I have been using lythium hypochlorite since 1988 the second year I owned my 1st coleman spa. I also use it for my pool instead of those damn slo dissolving tabs that go into the chlorinator. It works brilliantly for the pool too. I don't find myself ajusting the PH as often as well. Calcium hypochlorite (HTH) cheap as hell at cotsco's would be ok with a cement pool to a certain point.