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  1. R

    what is bad about high CYA levels?

    I have a liner pool and cya reading 145 (pool store) Cloudy water started just today with a FC 4. My question is I have been using the tablets for chlorine. What do I need to do to straighten out this problem. I don’t think I can drain the pool because it is a liner. Thanks
  2. R

    Phosphate Levels

    We have a 20,000 gallon in ground liner pool with DE filtration. Our water chemistry is fine with everything in normal ranges. Testing for Phosphates gives a reading of over 2.5 PPM (2500 ppb) Is this something we should be concerned about or does it not really matter. Not sure where the...