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  1. T

    Barely a chlorine reading

    What would be a reason for not getting a chlorine reading? Every time I test our pool water the FC is always very low. The pool is clear and looks great. I would never think anything is wrong with it until I take it to the pool store to test it. Here are my latest numbers: pH = 7.6 TA = 81...
  2. T

    High CYA no chlorine reading

    The pool is balanced except for the CYA and chlorine. CYA - 100 FC - 0.24 TC - 0.33 Everyday there are small patches of algae, which is easily brushable and disappears. On Thursday, I shocked with 2 bags. Next day no chlorine and patches of algae. On Friday, I shocked with 3 bags and with...