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Thread: CSI is -.63, problem for vinyl pool?

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    vanessadickson's Avatar
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    CSI is -.63, problem for vinyl pool?

    Do I need to do anything about a CSI thats -.63 with a vinyl pool? What might it hurt if theres no plaster? Does a low CSI affect swimmability at all?

    I read the Pool Calc explanation of what CSI measures, but still have these questions. Thanks !

    TA 80
    pH 7.4
    CHlor 3
    CYA 65
    CSI -.63 (per Pool Calc.)
    38,900 gal., UG, vinyl, SWG, Hayward w/T-15, 1.0HP pump, sand filter, Aquabot Turbo-T

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    Mod Squad Bama Rambler's Avatar
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    Re: CSI is -.63, problem for vinyl pool?

    You left out a few chems that go into the csi equation.
    However, nothing you posted indicates a problem. My csi reads infinity because I have zero ch.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    vanessadickson's Avatar
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    Re: CSI is -.63, problem for vinyl pool?

    Thanks BR, here are all the numbers:

    TA 80
    pH 7.4
    CHlor 3
    CH 180
    CYA 65
    Borates 0
    Salt 3200
    Temp 85

    CSI -.63 (per Pool Calc.)
    38,900 gal., UG, vinyl, SWG, Hayward w/T-15, 1.0HP pump, sand filter, Aquabot Turbo-T

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    duraleigh's Avatar
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    Re: CSI is -.63, problem for vinyl pool?

    CSI is not at all necessary for the successful management of your pool. Many here never calculate it....I don't.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    JasonLion's Avatar
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    Re: CSI is -.63, problem for vinyl pool?

    Low CSI is not a problem for a vinyl liner pool. High CSI is a problem for any kind of pool.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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