For some reason our chlorine levels have been going down quick, which is probably because we're swimming more and it's getting hotter. Last night I checked and it was 2 so I upped the percent to 60%. As I was checking the pH I decided to use the block tester to see if levels were up and worth testing again. It showed the brightest yellow possible so I tested. It was only at a 3. I get that the block test isn't exact but shouldn't it be closer than that? Am I missing something else? Does...
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