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Thread: Best Guess CYA chart

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    Exclamation Best Guess CYA chart

    ===========================================
    The current chart (2011) is here:
    best-guess-swimming-pool-chlorine-chart.html
    PoolDoc
    ===========================================

    Ben's 'best guess' FC/Stabilizer table for algae free operation of OUTDOOR pools -- as of July 2003 --

    Use the info in this chart to help you figure out what levels of chlorine you need to maintain in your pool based on the amount of CYA (cyanuric acid, also called stabilizer) that you have in your pool. (FC = free chlorine)

    Code:
    Stabilizer . . . . . . Min. FC . . . . Max FC . . . 'Shock' FC
    => 0 ppm . . . . . . . 1 ppm . . . . . 3 ppm . . . . 10 ppm
    => 10 - 20 ppm . . . . 2 ppm . . . . . 5 ppm . . . . 12 ppm
    => 30 - 50 ppm . . . . 3 ppm . . . . . 6 ppm . . . . 15 ppm
    => 60 - 90 ppm . . . . 5 ppm . . . . . 10 ppm . . .. 20 ppm
    => 100 - 200 ppm . . . 8 ppm . . . . . 15 ppm . . .. 25 ppm
    Last edited by PoolDoc; 03-08-2012 at 08:08 AM.

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