In SoCal, calcium hardness is my troublespot. 775 is after emptying half the pool during spring (and now it's too hot out here to bother again until fall...), so I try to keep my pH at 7.2 to keep my hardness from going up. In the process, my TA has started going down consistently and not rising at all.
Any suggestions? What is the lowest I can keep my TA?
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