Chlorine levels are based on CYA levels. If you haven't already done so, please take a look at the Best Guess Table in my signature below. If you drop below the necessary chlorine range, you risk an algae bloom.
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Chlorine levels are based on CYA levels. If you haven't already done so, please take a look at the Best Guess Table in my signature below. If you drop below the necessary chlorine range, you risk an algae bloom.
I looked at that before but didn't see why the ranges changed like they do. I guess algae is the answer. Does the cyanuric acid level decrease slowly with time?