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Thread: Total Chlorine is Very Low But Free Chlorine is High??

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    Total Chlorine is Very Low But Free Chlorine is High??

    I am a little confused. I just tested my pool and the results are as follows:

    Hardness:250
    Total Chlorine: 0.5
    Free Chlorine: 3ppm
    PH: 7.8
    TA: 180
    CYA: 50

    I know that I need to bring the PH down and the TA. But, how is it that Free Chlorine is high but total is low? Any suggestions on what to do? Will Ph Down bring the TA down too? Also, how soon after adjusting should I wait to swim? Thanks
    KL :-)
    5,300 gal Intex Vinyl AG
    Krystal Klear 1,500gal/hr cartridge
    3/2013

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    Smykowski's Avatar
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    Re: Total Chlorine is Very Low But Free Chlorine is High??

    Something about the test is wrong.

    FC + CC= TC

    TC can never be less than FC.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
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    Mod Squad jblizzle's Avatar
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    Re: Total Chlorine is Very Low But Free Chlorine is High??

    What kit are you using? Can you describe how you got the chlorine numbers you reported?

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
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    Re: Total Chlorine is Very Low But Free Chlorine is High??

    I am using a 6 way strip kit, and I used the numbers that correspond with the colors. I was kind of wondering if it was the kit too.
    KL :-)
    5,300 gal Intex Vinyl AG
    Krystal Klear 1,500gal/hr cartridge
    3/2013

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    Mod Squad jblizzle's Avatar
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    Re: Total Chlorine is Very Low But Free Chlorine is High??

    This just confirms how bad test strips are. Check out the link in my signature for a comparison of the kits we recommend.


    Posted from my Droid with Tapatalk ... sorry if my response is short
    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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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