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  1. B

    TA question

    Thank you
  2. B

    TA question

    TA question , just uncovered pool here in Pennsylvania. FC 7.5 CC 0.5 CYA 50 TA 70 PH 7.2 The lamenated card in tf test kit suggest a TA of 100-120 for manually chlorinated pools. Pool math suggests 50-90 . Which one is correct? The pool is crystal clear. Thank you