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Hi all, So, previous house, previous pool was fiberglass and I usually just dumped the dry CYA into the deep end. Brush it around a couple of times a day and after a few days, it was dissolved to the point of not being visible. I was never that concerned about hurting the surface of the...

Hi all, I've been testing with the TF-100 for years, which includes the K-1000 test and its chlorine/pH comparator block. Now I've just gotten the TF-Pro test kit (which I love, always wanted one of those magnetic stirrers...) and it's got the exact same drops for chlorine and pH but the...