Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Borax after no drain acid wash

  1. Back To Top    #1

    Join Date
    May 2014
    Location
    United States
    Posts
    11

    Borax after no drain acid wash

    Halfway through acid wash on 17K gal pebbletec swg pool. Prepping for the renaissance. At moment looks like 0 TA and ph well below 5, chlorine somehow disappeared. Anyway, since borate seem to be advocated here so much, would like to add that to my balancing. Iam seeing on some threads that baking soda can be added to begin rebalance process. Am thinking I will use borax first and that would offer much bring up the ph and ta as well as add borate. Then I can fine tune ph . Does anyone have any thoughts on this? According to pool calculator if I add 640 oz of mule team I will take ph and Ta to almost near target and borate s to 34 . Is this a good idea or if not, why? Thanks for any input given. I am only a couple years into pool ownership. Still learning!

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Borax after no drain acid wash

    Raising the PH most of the way with borax and then testing again to see where you are and adjusting both PH and TA from there as needed is just fine in this situation. Just keep in mind that PoolMath/Pool Calculator can be off on large PH changes, so don't calculate an amount and go all at once, add borax in steps, testing half an hour after each step to see where you are.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Join Date
    May 2014
    Location
    United States
    Posts
    11

    Re: Borax after no drain acid wash

    So....Rebalanced early this am. 9x4.75 lb boxes of borax....slowly....two boxes at a time, and allot of stirring afterwards followed by 45 min...then another two boxes...and so on. All seemed ok but ph was still too low....so one box of soda ash and voila, balanced. Pump was on all day since 6 am at high speed. I came home couple hours ago...pool looked greener than when I started! Where's the blue? Then I started brushing and there was allot allot of powder at the bottom. What is that? So...put the great white shark vacuum in there and it has been picking up most,I brushed a couple times...now turned off vacuum letting water circulate more. No extra pressure at my pump. Thought there would be. And I am thinking I am seeing more white splotches...in different places than before. Hoping that's just residual dust. Water a little cloudy.....hoping I will wake up to a sparkling blue pool. Did anyone else have this powder at the bottom? Is that normal at no drain acid wash? Btw, my chemistry is)
    Fc 3
    Ph 7.5
    TA 80
    Don't have test kit for cya and borates...that's been ordered...I used pool calculator to determine how much borax to add
    17k SWG, Quad DE filter, pentair pump and filter, solar heated, pebblesheen finish

  4. Back To Top    #4

    Join Date
    May 2014
    Location
    United States
    Posts
    11

    Re: Borax after no drain acid wash

    One quick note to the above...when I came home today,ph was at 7.8. 4 cups of muriatic acid dropped to its current 7.5
    17k SWG, Quad DE filter, pentair pump and filter, solar heated, pebblesheen finish

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •