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Thread: Refill after leak repar chemical question

  1. Back To Top    #1

    Join Date
    Apr 2015
    Hitchcock tx

    Refill after leak repar chemical question

    Live near Galveston tx
    I believe pool to be 16,000 gallons
    Has waterfall and hot tub
    Polaris wall pressure cleaner

    After several years of having a pool leak and finally the 2nd company I hired found 2 leaks. First company tried twice, found nothing and said they never promised to find it so quit on me.

    Now I am ready to get the pool ready with plain rain and city water in pool at this time.

    I am needing to add cya and borax (20 mule team is what I used in the past)

    I believe I want to get about a 30 or 40 for cya and 50 for borax. Please correct if I'm wrong.

    What is the best way to do this. I know 20 mule team is higher in ph and cya is lower and doing separately they need to be balanced?
    Can I do them together to counter each other then adjust as needed after they settle out?

  2. Back To Top    #2
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    South-Central Texas, Marion/San Antonio

    Re: Refill after leak repar chemical question

    Hi David and welcome to TFP! First thing before you add any chemicals is answer these two things:
    - What test kit are you using? (TF-100 or Taylor K-2006). If not one of those, it really needs to be.
    - What are your current test readings in the pool? We only add what is needed to achieve the recommended ranges (link below n my sig).

    Below you'll also see a link for Recommended Chemicals, coupled with the other links below are quite valuable to you.

    In short, Wal-Mart should have granular stabilizer to increase CYA. In our area with summer approaching, I'd go to at least 40 for now. You might increase later as the sun gets more intense. I'd also watch FC closely and ensure that on day one with new water the FC is about 3 ppm. Once you have the stabilizer in the water, increase FC to about 5-7. I like the bleach from HEB (regular Bravo) or Wal-Mart (Great Value). Also make sure pH is in the mid-7s.

    If you can post all your levels and update your signature with your pool info that would help a lot. Nice to have you with us.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Refill after leak repar chemical question


    With the Texas sun, I'd shoot for 40-50 on the CYA.

    I'd also wait until everything else is balanced and running well before adding borates, because once you do, shifting pH and/or TA is going to be a lot harder to do. If you use the search box here, you'll find some threads on adding borates. A bunch of people have bought boric acid which minimizes the pH problems.

    You know going in that you will need CYA and chlorine. The rest of it will have to wait until the pool is filled and the water is circulating so you can test.
    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!

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