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  1. C

    Please explain relationship of CYA and sun; chlorine loss

    I've hunted around on the site and have not found an explanation of the exact nature of the relationship between the CYA in the pool and the loss of chlorine levels when the sun is out. I read that if my CYA is at 50, chlorine won't be lost to the sun. And I see this on one of the PoolSchool...
  2. C

    CYA very high; run other tests anyway if have to replace water? Newbie

    Newbie here. My Taylor K-2006 arrives today. I have pool store test numbers now. Pool is yellow-green and cloudy with yellow powdery stuff on bottom. I won't go into how it got this way, but it's been like this for more than a week. Thank goodness for this website, which I found over the...