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Thread: Lowerin pH with Dry Acid

  1. Back To Top    #1

    Join Date
    Mar 2012
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    London, ON CDN
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    Lowerin pH with Dry Acid

    I have a quick question that relates to the topic instead of starting a new tread on the same subject. I was also using dry acid to lower my PH and then switched to MA. I was able to get my PH down easy enough but I went from a TA off 110 down to 80ppm now.

    Does Dry acid lower the TA the same as MA does? I am using 12% bleach to sanitize with which keeps pushing my PH up. So I am having to constantly added acid every now and then. I guess I should bring my TA back up a bit too while I am at it?

    Current Results

    CL 3
    CC 0
    PH 7.4
    TA 80
    CH 180
    CYA 30
    21K gal, Vinyl, 16X32, 3/4 HP Hayward Maxflo, Hayward Pro 24" Sand Filter
    Apollo Pools (Canadian Supplier for Taylor Kits) www.piscines-apollo.com

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    Mod Squad jblizzle's Avatar
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    Re: Lowerin pH with Dry Acid

    According to poolcalculator, the dry acid lowers the TA slightly more than MA for the same pH change.

    Your pH ids rising due to the liquid chlorine which is basically pH neutral. Any aeration in your pool, will cause the pH to rise.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
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  3. Back To Top    #3
    UnderWaterVanya's Avatar
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    Re: Lowerin pH with Dry Acid

    MA and Dry Acid both work to lower TA.

    TA of 80 is fine for Vinyl but eventually you'll need to add more if it drops too far.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  4. Back To Top    #4

    Join Date
    Mar 2012
    Location
    London, ON CDN
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    42

    Re: Lowerin pH with Dry Acid

    Thanks for the quick replies.
    21K gal, Vinyl, 16X32, 3/4 HP Hayward Maxflo, Hayward Pro 24" Sand Filter
    Apollo Pools (Canadian Supplier for Taylor Kits) www.piscines-apollo.com

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