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  1. Squidward Tentacles

    CYA tests very different, which to believe?

    Hi, Been following TFP since getting my first pool in 2017. Never had an issue with chemistry until now. I have always used the "tube with the black dot" CYA test and it's always been between 30-40. This year I tried using strips to test for the first time and 2 different brands of strips are...
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