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Thread: tfteskits cya test

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    tfteskits cya test

    does the tfteskits cya tester give a numerical read?
    I have absolutely no faith in the "black dot" tester in my kit.
    All of the pool stores around here use similar testers and the results can vary tremendously.
    Ideally i'm looking for a cya test that is both accurate and reasonably easy to use.
    thanks
    6600 gal IG concrete/gemcoat
    Fresh water
    1 HP motor
    StayRite PLM 100 system 2 filter
    full sun
    Treasure coast, Florida

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    JasonLion's Avatar
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    Re: tfteskits cya test

    The TF100 includes a black dot CYA test. The final result is a number, but you get the number by filling the tube until the black dot disappears and then seeing how far up the tub you filled it. This is the best CYA test available for any reasonable amount of money. To get something significantly better costs hundreds of dollars.
    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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    Re: tfteskits cya test

    Thanks for the info.
    Is there a primer on this site somewhere about how to conduct a cya test? My taylor kit says to add the reagent/water mix untill the black dot "first" disappears. I'm not sure what that means, or how best to conduct the test.
    6600 gal IG concrete/gemcoat
    Fresh water
    1 HP motor
    StayRite PLM 100 system 2 filter
    full sun
    Treasure coast, Florida

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: tfteskits cya test

    There is a through discussion of the CYA test in the extended test kit directions.
    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

  5. Back To Top    #5

    Re: tfteskits cya test

    Thanks.
    I read the discussion and tried it out. I got similar results from the pool store guy (the one i trust)
    so i think I may be getting the hang of it.
    6600 gal IG concrete/gemcoat
    Fresh water
    1 HP motor
    StayRite PLM 100 system 2 filter
    full sun
    Treasure coast, Florida

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    Join Date
    Apr 2011
    Location
    Brookeland, Texas
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    89

    Re: tfteskits cya test

    Quote Originally Posted by JasonLion
    The TF100 includes a black dot CYA test. The final result is a number, but you get the number by filling the tube until the black dot disappears and then seeing how far up the tub you filled it. This is the best CYA test available for any reasonable amount of money. To get something significantly better costs hundreds of dollars.

    Jason,
    Please define "signifcantly better" & when you say hundreds of dollars, can you be more specific and a give a product example. I too am one that really strugles with the accuracy of the black dot test.
    12k gal. Free form 14' x 28' IG gunite, 8' raised spa, Hayward T15 SWG, Hayward Ecostar VS pump, Hayward Super II pump, Booster pump, Polaris 280, Hayward DE 7220 filter, 400k Btu heater, Color logic LED lights. Pro Logic controller with remote.

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    Join Date
    Jul 2010
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    England, UK
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    Re: tfteskits cya test

    I use a tester similar tot his, but an older model with fewer modes (only Cl, pH and CYA).

    http://www.1st-direct.com/lovibond-pool ... etails.htm

    The CYA test is easy to use, reproducible and has always made sense given what's gone into the pool.
    90k litres, outdoor in ground pool, concrete, painted (I hate paint)
    Sta-Rite 5P2R 1.5 Hp pump, undersized sand filter (needs upgrading).

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    JasonLion's Avatar
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    May 2007
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    37,879

    Re: tfteskits cya test

    The black dot CYA test tends to be +-15. With experience and training using a reference solution you can often get that down to +-10. To do better than that you would need at a minimum something like an Oakton C102, which claims +-4 though it requires very careful usage to achieve that, and goes for around $320. And even that is going to be a little quirky and can give misleading results if you don't understand it's limitations or are trying to test something outside its range.

    With a little reading of the extended test kit directions and some practice nearly anyone can use the black dot test quite successfully.
    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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