Bleach does raise pH in my pool, enough so that I add acid weekly.
For the previous 9 years (of high CYA using stabilized chlorine) I've never needed to add anything to maintain pH in the 7.2 range.
Adding some acid isn't a big deal considering how much better the pool looks on the BBB routine, but I'm interested in what could be the reason for some of us seeing a steady upward creep in pH while others don't.
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