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Thread: pH won't go down

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  1. #1
    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: pH won't go down

    Quote Originally Posted by myLABSpool View Post
    If pH keeps inching up, I will follow your advice for lowering the TA to 70. Here I was real proud of myself for nailing the TA right in the middle of the recommended range at 100.
    Actually, the recommended range for TA using unstabilized chlorine sources such as bleach (which are net pH neutral or close to it on use) is 80 to 100 ppm and below 80 is needed in cases where pH tends to rise fast (SWCG, fountains, negative edge pools for example). For stabilized chlorine, organic bromine, and MPS a higher TA of 100 to 120 is recommended since these are acidic and the higher TA will ofset their acidic effect by causing pH to rise.
    Retired pool store and commercial pool maintenance guy.

  2. #2
    Join Date
    Aug 2006
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    Default Re: pH won't go down

    Thanks for the info waterbear. I will lower my TA to try get my pH down as you suggest. It has crept up again to 8.0. I really want to get this right before I close --which is only a couple weeks away at most.

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