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Thread: Reading the calculator

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    Reading the calculator

    My pool is cloudy. I don't even know where to start. It looks like i have no chlorine. What do I need to do with the readings below?


    FC - free chlorine 0 ppm
    CC = Combined Chloramines 0
    TC= total chlorine 0
    PH 7.2
    TA - Total alkalinty 110
    CH - calcium hardness 150 ppm
    CYA - 100
    18K gal, IG Gunite, Sand Filter, TF-100 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Reading the calculator

    What test kit are you using?
    Jason, TFP Moderator
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    Re: Reading the calculator

    The TF100
    18K gal, IG Gunite, Sand Filter, TF-100 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Reading the calculator

    Likely the first step should be replacing water to lower the CYA to a manageable level. But you need to be careful how much you drain depending on ground water levels.

    Then get some chlorine in the pool. What does the water look like?
    Jason, TFP Moderator
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  5. Back To Top    #5

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    Re: Reading the calculator

    I understand that part. I just drained half and re-filled it because CYA was like 140. What would be the next step? Just curious
    18K gal, IG Gunite, Sand Filter, TF-100 test kit

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    Re: Reading the calculator

    Can I not drain the pool and balance the other levels? Ill drain it in a couple of weeks. I just don't want to deal with it right now.
    18K gal, IG Gunite, Sand Filter, TF-100 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Reading the calculator

    What does the water look like?

    If clear, you need to maintain the FC above 7ppm all times.

    If not clear, you need to SLAM at a FC of 39ppm.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Reading the calculator

    It's really cloudy. I guess Ill SLAM?
    18K gal, IG Gunite, Sand Filter, TF-100 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Reading the calculator

    Are you sure the CYA is not above 100? Trying to SLAM with the CYA that high is not a good idea.
    Jason, TFP Moderator
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    Re: Reading the calculator

    I'm pretty sure cya is around 100 to maybe 90. I would just hate to drain the pool again. I'm going on vacation tomorrow for a week.
    18K gal, IG Gunite, Sand Filter, TF-100 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Reading the calculator

    Well then there is no point on doing anything. You can not SLAM the pool in a day. Start over when you get back.
    Jason, TFP Moderator
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  12. Back To Top    #12

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    Re: Reading the calculator

    Ok. Thanks for your help.
    18K gal, IG Gunite, Sand Filter, TF-100 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Reading the calculator

    Although your CH is too low and could with the low pH, is not good for your plaster.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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