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Thread: Low TA should I correct?

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    ganselmi's Avatar
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    Aug 2009
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    Roma - Italy
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    Low TA should I correct?

    Hello guys,

    after a long research I was finally able to get a professional test kit directly from the US to here in Europe.

    I've got a taylor service complete kit K2005C in order to perform DPD Clorine (free/combined/total), DPD Bromine (that I do not use at all but are indeed the same CL reagents), PH with Acid and base demand, TA, CH and CYA.

    My vinyl swimming pool is actully closed for the winter (meshed cover), only the pump run for about 1 hour/day and I just periodically check Cl and PH with my previous basic test kit.

    Today I've run the 1st complete water test and those are the results:

    FC = 1
    TC = 1
    CC = 0

    PH = 7,2
    CH = 180
    TA = 30

    I've repeated the TA test twice in order to be sure about the result, as it looks pretty low.

    I've put those values in the pool calculator who evaluated a CSI of -1,26 and wondering if withi this value I may got damages in my pool.

    Thanks for your help!
    33x15 (17000 gallons) feet http://www.flickr.com/photos/4312999...7622362656171/
    Magiline Magiclassic http://www.swimming-pools-magiline.com/
    SWG Compu-Pool CPSC-36 http://www.compupool.com.au/product/..._cleaning.html
    PH Control through Muriatic Acid

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,887

    Re: Low TA should I correct?

    Low CSI is not a problem for a vinyl lined pool as long as you don't have any tile/masonry/stone below the water line.

    Still, you should raise your TA up to around 70, to help stabilize the PH.
    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

  3. Back To Top    #3
    ganselmi's Avatar
    Join Date
    Aug 2009
    Location
    Roma - Italy
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    Re: Low TA should I correct?

    Fortunately I do not have any masonry/stone under the water line.

    The PH seems to remain stable to 7.2 since 2 months now, and I'd like to avoid any adjustment for the next 4 weeks where possible.
    I'm planning to finally reopen the pool for the summer season by end of April and 'cause I'll have to shock and refill SWG salt diluited over this rainy winter here, I don't know which effect they may have (this is my second year pool and first opening).
    33x15 (17000 gallons) feet http://www.flickr.com/photos/4312999...7622362656171/
    Magiline Magiclassic http://www.swimming-pools-magiline.com/
    SWG Compu-Pool CPSC-36 http://www.compupool.com.au/product/..._cleaning.html
    PH Control through Muriatic Acid

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