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Thread: High CYA & TA, or manageable?

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    cramar's Avatar
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    High CYA & TA, or manageable?

    Just opened the pool up last week, water was in really good shape after following winter close up instructions in pool school!!

    CYA = 54
    TA = 150
    Ph and FC/CC are all on target.

    I also finished plumbing in a fountain, I'm wondering if I should aerate to drop those levels a bit. Any suggestions for a pool my size, also, any rough ideas on how many hours of aerating I'd be looking at?

    PS, we've got a good blast of rain coming our way in the next few days (supposedly), maybe that will be enough to knock them down a bit.
    20' X 54" Sharkline Matrix Resin AGP, 9400 Gallons, Sta-Rite 1 HP Dynamo Pump, 150 lb Pentair Sand Filter, Gorilla Pad,
    Foam Cove, Taylor K-2006 kit, BBB method, 8'X20' Fafco Sunsaver Hard Plumb, DIY Fountain, Margarittaville Fiji


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    JasonLion's Avatar
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    Re: High CYA & TA, or manageable?

    Lowering TA can take a while. Start by lowering the PH to 7.2, then aerate to raise the PH back up without also raising TA, and when the PH comes up to something reasonable repeat. Depending on a large number of factors, this can take anywhere from a couple of days to several weeks. Generally it goes fairly quickly at the start, and slows down as TA gets lower.

    By the by, saying "are all on target" doesn't really help us. It is far better to have numbers for each of the levels.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    cramar's Avatar
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    Re: High CYA & TA, or manageable?

    Ph is 7.5
    FC was 3.5 but treated to get to 5 (before the CYA test)
    CC = 0
    20' X 54" Sharkline Matrix Resin AGP, 9400 Gallons, Sta-Rite 1 HP Dynamo Pump, 150 lb Pentair Sand Filter, Gorilla Pad,
    Foam Cove, Taylor K-2006 kit, BBB method, 8'X20' Fafco Sunsaver Hard Plumb, DIY Fountain, Margarittaville Fiji


    My Build: one-man-one-pool-and-one-deck-agp-pics-t37172.html
    My Build 'To-Do' List for other DIY'ers: my-pool-build-list-t40249.html?hilit=list

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    Richard320's Avatar
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    Re: High CYA & TA, or manageable?

    CYA is fine - well within the tolerances on the test. Just be sure to maintain the minimum FC level accordingly.

    TA will come down all by itself if you are scrupulous about maintaining pH. If you get tired of adding acid every day, then get aggressive and follow the directions in Pool School.

    My advice is to stop fussing with it and get in!
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    cramar's Avatar
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    Re: High CYA & TA, or manageable?

    Hehe....temp is 69, I was gonna jump in tonight but by 8pm it started getting pretty cold out.
    20' X 54" Sharkline Matrix Resin AGP, 9400 Gallons, Sta-Rite 1 HP Dynamo Pump, 150 lb Pentair Sand Filter, Gorilla Pad,
    Foam Cove, Taylor K-2006 kit, BBB method, 8'X20' Fafco Sunsaver Hard Plumb, DIY Fountain, Margarittaville Fiji


    My Build: one-man-one-pool-and-one-deck-agp-pics-t37172.html
    My Build 'To-Do' List for other DIY'ers: my-pool-build-list-t40249.html?hilit=list

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    gordyjamz's Avatar
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    Re: High CYA & TA, or manageable?

    Yeah, TA of 150 isn't bad. At least if your calcium isn't off the charts. If your pool is clear, I wouldn't worry that much about it at 150. I deal with high TA every year at opening due to our fill water being so high (220 out of the faucet). I usually point my jet upwards for splash for a week or two, ratchet it down to under 180, and I'm good to go. Every pool is different, but like I said if your calcium level isn't high and your pool is clear you should be ok. Your PH may or may not creep up once in a while, you'll just have to keep an eye on it.
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