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Thread: TA and vinyl liner

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    Join Date
    May 2016
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    Troy IL
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    TA and vinyl liner

    The pool school chart says vinyl TA for a non SWG pool should be 50-90+. I read somewhere that for vinyl liners it was important to keep the pH balanced and the TA below 120. Now, here on the TFP forums I've read that TA mostly only matters if you have a plaster pool, or if you are having problems fighting pH rise.

    So, settle it for me, if my TA is 200ppm, should I be trying to get it under 120 even if my pH is stable?

    17,500 gallon IG Vinyl
    Pentair Tagelus TA60D Sand filter
    Pentair Challenger 1.5HP pump CFII N1 1.5A
    Taylor K-2006-A, Stenner 45MPHP10 auto chlorine feed

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    Donldson's Avatar
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    Re: TA and vinyl liner

    TA really is only important in so far as keeping your pH in check. If your pH is stable then generally whatever your TA is should be fine. People who use pucks to chlorinate have to keep their TA higher as the pucks are quite acidic and the TA helps keep the pH from bottoming out. Those with SWGs or who manually chlorinate typically need to lower the TA further to keep the pH stable.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

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    Re: TA and vinyl liner

    Of the parameters we test for and "keep inline", TA is easily the most misunderstood. It is quite easy to adjust and there is actually a very wide range that seems to perform nicely in almost all pools,

    If I had TA of 200, I would bring it down by aeration and acid (read Pool School) but I wouldn't be in a big hurry.....it just not that critical. I would shoot for 100 or so. As noted above, as long as your pH is table, you are good to go.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    May 2016
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    Troy IL
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    Re: TA and vinyl liner

    Thanks all. I had a feeling that 120 or below recommendation was like most pool advice you get from sales people. I appreciate you confirming.

    I too want to lower it, but am not in a hurry. Maybe after this holiday weekend. I've got some spare PVC pipe I was going to use to make an aerator.

    17,500 gallon IG Vinyl
    Pentair Tagelus TA60D Sand filter
    Pentair Challenger 1.5HP pump CFII N1 1.5A
    Taylor K-2006-A, Stenner 45MPHP10 auto chlorine feed

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