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  1. R

    Daily chlorine additions...why?

    My CYA is about 50. Maintaining somewhere between 6-8 FC, with about a 3ppm loss per day (full sun in TX). I've seen several posts asking if certain levels of FC are too high, and the response is always that you can bring FC up to shock level and still swim safely. So if that is true, my...
  2. R

    Pentair performance curve for dual speed, low head limit

    http://www.pentairpool.com/pdfs/SuperFloEngOM.pdf Superflo series. The low RPM level has a curve that doesn't go beyond 20ft of dynamic head. Can someone explain how to interpret that? I have more than 20ft of head in my system, I think most people do. But it makes it appear that anything...
  3. R

    Total chlorine

    Re: Chlorine/CYA relationship I realize this is an old thread, but it came closest to what I am searching for so I will resurrect. After reading chem geek's post about active vs. bound (to CYA) chlorine levels here, I was curious what our test kits are measuring. When I get a reading of...