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Thread: TF-100 chlorine test

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    TF-100 chlorine test

    Why is my chlorine drop test so inconsistent when my chlorine levels are super high (42.5)? I test and get 1.5; knowing this can not be correct I test again and the water sample will actually trun dark pink and I get 31. Is there a problem with the test kit or is the problem that my cholorine so high? I am super cholorinating to get rid of algae introduced my frogs jumping into the pool. Any help would be appreciated.

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: TF-100 chlorine test

    Are you using 2 heaping scoops of R-0870 powder? With chlorine that high you need to scoops to bind it all.
    Why are you keeping your FC that high?
    What's your CYA level?
    If you're not able to test it how do you know that the FC is 42.5?

    What are the rest of your test results?
    pH (but don't bother testing it with FC this high)

    By the way, you didn't get an algae outbreak because of frogs jumping in your pool. You got it because your FC wasn't maintained at the proper level for your CYA.
    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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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: TF-100 chlorine test

    Your inconsistent results are almost certainly due to not using enough R-0870 powder. Higher FC/CC levels require using more R-0870 powder.
    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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