Re: Reduction of CH
Originally Posted by
iwannapool
I thought I read somewhere you could lower CH by slowly adding trisodium phosphate. I believe this is the common cleaning product, TSP.
TSP (the real stuff, not the substitue) has been used to lower calcium levels in pool in the past but is not commomly used anymore since the result of it is usually an algae bloom because the pool is now filled with orthophosphates! We are talking about REALLY HIGH phosphate levels! Back in the day I believe they hit the pools with copper afterward to keep the algae at bay.
Retired pool store and commercial pool maintenance guy.
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