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Thread: CSI ?

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    cnatra's Avatar
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    CSI ?

    So what do I need to know about CSI & how to adjust it ??

    FC 8.8
    CC 0.0
    PH 7.4
    TA 150
    CH 100
    CYA 30

    CSI is -.28

    according to the pool math calculator


    Thx
    23k gunite, Stonescapes Mini Aqua Blue w/seashell, Pentair CCP520 cartridge filter, 2 Pentair Intelli-Flo VS pumps, Pentair Mastertemp 400, Pentair EasyTouch 8+wireless controller, Silencer spa blower, 3 Intellibrite LEDs, Pentair Racer cleaner, Pentair 320 chlorinator
    my build http://www.troublefreepool.com/threa...-north-Houston

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    duraleigh's Avatar
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    Re: CSI ?

    I have never used CSI. If you keep the parameters we test for in their respective ranges, CSI is not a factor and there is no need for it.
    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 ?

    CSI is mostly only used by people with high fill water calcium levels. Normally you can just ignore it.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    cnatra's Avatar
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    Re: CSI ?

    OK , Thanks
    23k gunite, Stonescapes Mini Aqua Blue w/seashell, Pentair CCP520 cartridge filter, 2 Pentair Intelli-Flo VS pumps, Pentair Mastertemp 400, Pentair EasyTouch 8+wireless controller, Silencer spa blower, 3 Intellibrite LEDs, Pentair Racer cleaner, Pentair 320 chlorinator
    my build http://www.troublefreepool.com/threa...-north-Houston

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    Mod Squad jblizzle's Avatar
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    Re: CSI ?

    Yours is still in the range listed in PoolMath. The reason it is a little low is because your CH is out of spec low. The higher TA is offsetting the low CH some.
    Jason, TFP Moderator
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    Re: CSI ?

    Quote Originally Posted by JasonLion View Post
    CSI is mostly only used by people with high fill water calcium levels. Normally you can just ignore it.
    This is my situation. My fill water is around 150 CH and my pool usually tests between 475 and 525 CH. I watch my CSI like a hawk and I keep it slightly negative. I've had no issues with scaling.
    9,200 gal. Gunite Luna Quartz French Grey pool with spill over spa, two fountains on tanning ledge (rarely used)
    Pentair Whisperflo 2HP, Pentair CCP Cartridge 420 Sq. Ft., Polaris 280 with booster pump
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