Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: TA before adding boric acid

  1. Back To Top    #1

    Join Date
    Aug 2015
    Location
    Teutpolis, IL
    Posts
    45

    TA before adding boric acid

    Hope to add borates this year to help with PH and possibly reduce chlorine usage. PH always seems to run high on our pool. Probably just order boric acid as figured out it was about the same price to order from duda than buying borax and muratic acid at Walmart/Rural King. Would I order the granular or the powder form?


    Know I need to adjust TA first.
    Found couple different TA recommendations. On the TF-100 test card it recommends TA 100-120 for manually chlorinated pools. On the reference guide on TFP site it recommends 50-90+ So what should my TA be at before I start? TA is currently 120.
    What PH should I aim for before I start since I will be bringing it down when I reduce the TA?

    Thank you!!!
    18x33x4 oval Above ground pool- 15300 gallons, sand filter, full sun no shade
    tft-100 test kit
    Central Illinois

  2. Back To Top    #2

    TFP Guide

    chiefwej's Avatar
    Join Date
    Jun 2011
    Location
    Tucson
    Posts
    3,109

    Re: TA before adding boric acid

    Do you have a way to aerate the water? Lowering the TA is a very long process without aeration.

    I have found that the quickest way to lower it is to lower pH to about 7.2, then aerate for a couple or three hours. Monitor pH and any time it rises to or near 7.5, drop it back to 7.2. It seems that the lower the pH you maintain during the process the faster it works. You just don't want the pH to get dangerously low. Once you get to the TA goal, keep aerating to get the pH to about 7.5, then you can add the boric acid.

    As far as a goal for TA, I think situations differ. In my case with high CH and high TA fill water I shoot for around 60, but your results may differ. I find that with 50 ppm borates and a TA around 60, my pH will slowly rise and stabilize at around 7.8 for some time. Eventually it will suddenly rise, and it will take a good size dose of acid to knock it back down to 7.5, and repeat the process. The pool still uses a good amount of acid, but I can go much, much longer between additions.
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, H400 & Heliocol Solar, Dolphin S-300, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit, Smart Home/Alexa pool control

  3. Back To Top    #3
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    24,974

    Re: TA before adding boric acid

    What is your CH? Without knowing your CH I will say 60-70.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  4. Back To Top    #4

    Join Date
    Aug 2015
    Location
    Teutpolis, IL
    Posts
    45

    Re: TA before adding boric acid

    Quote Originally Posted by pooldv View Post
    What is your CH? Without knowing your CH I will say 60-70.
    Usually ch doesn't apply to my pool since since it not plaster. I will check tonight and post. Thanks
    18x33x4 oval Above ground pool- 15300 gallons, sand filter, full sun no shade
    tft-100 test kit
    Central Illinois

  5. Back To Top    #5

    Join Date
    Aug 2015
    Location
    Teutpolis, IL
    Posts
    45

    Re: TA before adding boric acid

    Ch is 200
    18x33x4 oval Above ground pool- 15300 gallons, sand filter, full sun no shade
    tft-100 test kit
    Central Illinois

  6. Back To Top    #6
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    24,974

    Re: TA before adding boric acid

    Ok, I would go 60.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

Posting Permissions

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