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Thread: Ph and ta

  1. Back To Top    #1

    Join Date
    May 2010
    Daytona Beach, FL 32117 USA

    Ph and ta

    I lowered my ph from 7,8 to 7 to also reduce my ta. This was on 5/27. On 5/29 I finally. Got it down to 7.0 when tested at 7 pm. At this. Time my ta was 70. I aerated the water and on 5/31 my ph is 7.3 and ta 80. This tested at 8 am. I turned the return down towards the bottom and want to try ro keep the ph around 7.3 and ta around 70. What do I need to do?
    12k Gal. Kidney IG pool (Built around 1964 screened enclosure?), Tahoe Blue Diamond Brite (Added 12/2007), 1 hp motor, Sta-Rite P2 pump, Hayward C900 paper cartridge filter, Resilience SWG PSC-3 SCC 25 Element, Dolphin Robatic Cleaner, Lamotte ColorQ Pro 11, Taylor K2006C, Lamotte Tracer PockeTester PH/TDS/SAL, purptiger

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Ph and ta

    Just keep testing and adjusting. When you lose water to evaporation, the numbers will change. And they'll change again when you refill. The only way to know how much is by testing. You'll spend less time testing and adjusting every day than you will brushing just once a week.

    Trouble-free doesn't mean maintenance-free.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3

    Join Date
    Jan 2009
    Cupertino, CA

    Re: Ph and ta

    Yep, I'd test pH daily at first to make sure it has stabilized. It is likely to change slowly over time and you just keep an eye on it. As you get used to how the pool behaves, you can test less frequently. If pH is still climbing faster than you like, you can lower TA a little more.
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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