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Thread: Chlorine / CYA chart vs PoolMath

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    cvgnus's Avatar
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    Chlorine / CYA chart vs PoolMath

    Hello all,

    I have been studying pool school and pool math recently and see a small difference when it comes to chlorine levels and CYA. Perhaps I am just splitting atoms here.

    At 50ppm of CYA the Chlorine / CYA chart recommends FC at 4-6ppm whereas poolmath suggests FC 4-8ppm when setup as TroubleFreePool.com. However shock levels are consistent between the two. Which of the two should I use as my goal? Sorry if this subject has been covered previously.

    Thank you
    5900 gal Oval 17' x 12' x 54" Sharkline Navigator 54 AGP; 1.5 HP Hayward Power-Flo LX Pump; Hayward EC65A DE Filter; AquaComfort XL ACT-750 Heat Pump;
    Hasa 8 gal Liquidator;
    TF-100 Test Kit w/Speedstir

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    Mod Squad JVTrain's Avatar
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    Re: Chlorine / CYA chart vs PoolMath

    The important number is the minimum. In both cases, 4 ppm. The target is a recommended level to bring up to each day when you test and dose. Some pools may use 2 ppm per day. Some may use 3 ppm. Some may use 1 ppm. Base your target on what you observe for your pool so that by the next time you test, your FC is still at or above the minimum.

    Glad your looking into all the details and reading carefully. I predict you'll have no trouble maintaining your pool!
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
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    Mod Squad jblizzle's Avatar
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    Re: Chlorine / CYA chart vs PoolMath

    I know I answered this exact question a few days ago
    The target is arbitrary. The key is to always stay above the minimum (which matches between the 2).
    Jason, TFP Moderator
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    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    cvgnus's Avatar
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    Re: Chlorine / CYA chart vs PoolMath

    Thanks for the replies. It all makes sense now. No atoms to split here

    Thank you
    5900 gal Oval 17' x 12' x 54" Sharkline Navigator 54 AGP; 1.5 HP Hayward Power-Flo LX Pump; Hayward EC65A DE Filter; AquaComfort XL ACT-750 Heat Pump;
    Hasa 8 gal Liquidator;
    TF-100 Test Kit w/Speedstir

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