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Thread: Chlorine/CYA question

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    AimeeH's Avatar
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    Chlorine/CYA question

    Maybe I'm misinterpreting somewhere but asking for clarification. Saw algae yesterday.....need to shock/slam pool. I don't need help with that process...got that thanks to TFP .

    CL/CYA chart says shock value for SWG is 28 with cya of 70
    Poolcalc says 20 with cya of 70

    Why the difference?
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    duraleigh's Avatar
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    Re: Chlorine/CYA question

    Use the chart...it'll speed the process a bit.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad woodyp's Avatar
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    Re: Chlorine/CYA question

    That's a topic currently under discussion by the forum operators to reconcile those. Use the 28 and you'll be just fine.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    AimeeH's Avatar
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    Re: Chlorine/CYA question

    Thanks.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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