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Thread: PH Vs CSI

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    Join Date
    Jul 2013
    Location
    Chandler, AZ
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    PH Vs CSI

    Which is worse? PH of 7.0 or CSI of .36?

    If I increase PH to 7.5, my csi will be .36. If I leave PH 7.0, my CSI is -0.11 closer to zero than .36. But, leaving PH at 7.0 is ok? Which is better?

    Other numbers:
    FC - 7
    TA - 80
    CH-625
    CYA -60
    Temps - high 107 (AZ)

    Thanks!
    Build in progress (Design phase), In ground, 16K Gallons, Chandler, Arizona

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    mas985's Avatar
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    Re: PH Vs CSI

    With a CH that high, you are probably better off slightly negative than positive and you really don't need to worry much about CSI between -.5 and .5.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
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  3. Back To Top    #3

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    Re: PH Vs CSI

    Thank you! Just to be clear there is no downside for having PH at 7.0?
    Build in progress (Design phase), In ground, 16K Gallons, Chandler, Arizona

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    JasonLion's Avatar
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    Re: PH Vs CSI

    Many people find that their eyes sting a little when swimming underwater with the PH below 7.2. We don't normally recommend going below 7.2 for that reason, but otherwise, 7.0 is alright.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  5. Back To Top    #5

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    Re: PH Vs CSI

    Thanks Jason!
    Build in progress (Design phase), In ground, 16K Gallons, Chandler, Arizona

  6. Back To Top    #6

    Re: PH Vs CSI

    I'm not seeing how your CSI is that high. What is your water temperature and what is your salt level?

    How are you chlorinating?

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