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    Default Muriatic Acid effects on TA

    Is there a way to administer acid to your pool as to reduce the effect it has on lowering your TA?
    I live in South Florida. I have owned my first pool for 6 years now. 12,200 gal. with exposed aggregate finish, spa with spill over, cartridge filter, pop up bottom cleaning jets, Chlorine by swg. I am eternally grateful for The Pool Forum!!

    15'x30' Rectangle w/ ovals at ends 12.2K gal IG pool; Bleach now as SWCG died.; Hayward 1200 cartridge filter; Emerson 2HP pump; 6hrs; Taylor K-2006 La Motte Borate Test Strips; utility; summer: ; winter: ; iPad; PF:9.8

  2. #2
    CarlD's Avatar
    CarlD is offline SuperMod Emeritus Vortex Adjuster CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars
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    Default Re: Muriatic Acid effects on TA

    Yes. Add baking soda to compensate and re-raise T/A.
    Carl

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    waterbear is offline Lifetime Member Sniggle Mechanic waterbear 4 stars waterbear 4 stars waterbear 4 stars waterbear 4 stars
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    Default Re: Muriatic Acid effects on TA

    Acid lowers TA no matter how it is added to the pool. Period. There are some 'old wives tales' entrenched in the pool industry that refuse to die in the light of science that has completely debunked them.
    As a side note. If you have to add acid all the time to maintain your pH then your TA is too high. One of the main causes of acid demand is too high a TA.
    If you are using a stabilized chlorine like trichlor or dichlor (or bromine or chlorine gas or MPS) which are acidic you want your TA on the high side (100-150) to minimized the effects of the constant additions of these acidic froms of chlorine and other acidic pool chemicals.
    If you are using an unstabilized chlorine (sodium hypochlorite--liquid chlorine and bleach, calcium hypochlorite, and lithium hypochlorite then you want yout TA down to around 70-90 ppm to minimize the outgassing of CO2 which will increase your pH stability and decrease your acid demand.
    It gets quite complex if you want to undersand the chemitry but if you are intersted I can post some links that explain it all!

    With a SWG the most important things you can do to minimize your acid demand are to maize sure your CYA is at 80 ppm AND to lower your TA to about 70 ppm!

    Once again if you want the explanation why PM me.

    And to answer your question, yes it is possible to keep a perfect pool if you understand the chemistry that is going on!
    Last edited by waterbear; 05-11-2009 at 05:51 PM.
    Retired pool store and commercial pool maintenance guy.

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    Default Re: Muriatic Acid effects on TA

    Evan is 100% correct, which is no surprise.

    But my short answer is also correct: Adding acid lowers T/A and you can add baking soda to compensate, if you want/need to.
    Carl

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    waterbear's Avatar
    waterbear is offline Lifetime Member Sniggle Mechanic waterbear 4 stars waterbear 4 stars waterbear 4 stars waterbear 4 stars
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    Default Re: Muriatic Acid effects on TA

    LOL! Carl, I never said it wasn't! I was just expounding on it! You are also 100% correct!
    Between us we covered the long and the short of it!
    Retired pool store and commercial pool maintenance guy.

  6. #6
    CarlD's Avatar
    CarlD is offline SuperMod Emeritus Vortex Adjuster CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars
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    Default Re: Muriatic Acid effects on TA

    Sorry if it came out that way, but no criticism was intended, simply multiple ways of viewing it.
    Carl

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