Try those chlorine test again. I can't imagine that your FC is actually 60 and CC is 4.5.
Also, is this a vinyl pool? (I can't remember from your other thread.) If so, you don't need calcium.
Re: Chem Geek or Mbar - are you there? Iron test question.
Try those chlorine test again. I can't imagine that your FC is actually 60 and CC is 4.5.
Also, is this a vinyl pool? (I can't remember from your other thread.) If so, you don't need calcium.
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