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Thread: new pool owner old pool what is going on with these numbers

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    new pool owner old pool what is going on with these numbers

    ok, 25,000 gallon above ground pool. Brand new sand filter. Been in the 90's here all week.

    fc-unknown
    tc-put 5 drops of oto in tester water turned dark yellow almost brown with little red specks in it.
    cya-60
    ta-put in 100 drops would not turn red just lite yellow color
    ph-7.2

    What is going on! tested water 3 days ago with these results

    tc-1
    cya-0
    ta-350
    ph-7.5
    then
    Added 7 pounds cya. ph minus, 8 gallons shock
    35k gal in-ground with spill over spa. 2hp shared pump. Polaris w/ booster. DE filter.

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    JasonLion's Avatar
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    May 2007
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    At high clorine levels the TA test starts blue and then turns yellow when you have added enough drops, instead of the usual green to red.
    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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    thanks you! now what about the TC? is it safe to swim?
    35k gal in-ground with spill over spa. 2hp shared pump. Polaris w/ booster. DE filter.

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Depending on what strength of shock you used, your FC level might have gone up by anything from 17 to 40. The OTO test is not designed to handle anything nearly that high so it looks kind of wierd.

    There are differences of opinion on how safe it is to swim at very high chlorine levels. I would swim but be sure to rinse off yourself and your bathing suit afterwards. Others disagree.
    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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    thank you so much for your reply
    35k gal in-ground with spill over spa. 2hp shared pump. Polaris w/ booster. DE filter.

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