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Thread: Pool Water Chemistry (Warning: Can Get Technical)

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  1. 07-17-2006 12:59 AM #9
    chem geek
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    Default Re: Pool Water Chemistry (Warning: Can Get Technical)

    Quote Originally Posted by aquarium
    If the pH is lowered to 7.2 do the charts change significantly?
    I can best describe the change by an example. At a pH of 7.5, FC of 3.0 and CYA of 30.0 (and TDS of 550, Temp of 80ºF), the HOCl is 0.045.

    At a pH of 7.2, with everything else the same, the HOCl is 0.052 which is not a huge change, but is still about a 15% change. The best thing to do is to download the spreadsheet and put in your actual numbers, but remember that except for disinfection, this is VERY preliminary so use with caution. Stick with Ben's best guess chart for now.

    Richard
    Last edited by chem geek; 07-18-2006 at 10:08 PM. Reason: Corrected "22% change" to "15% change" -- what was I thinking?
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