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    Pool Math - "Ideal Ranges"

    Hello friends, Hope everyone is staying safe and well amidst all the covid stuff going on. Question regarding the Pool Math's ideal ranges. After a recent app update, the ideal ranges all seem high to me from everything I've read/learned on this site 3 years ago when we built our pool. I've...
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    CSI Assistance

    Hello TFPF, Question RE CSI. I'm using the Pool Math app and currently have a CSI of -0.57. The app gives a warning that anything below -0.3 could be corrosive to tile. I have a chlorine pool and my current numbers are as follows: FC - 3.5 pH - 7.5 TA - 70 CH - 275 CYA - 50 BOR - 30 CSI -...
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