Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 10 of 10

Thread: Need to lower TA

  1. Back To Top    #1

    Join Date
    May 2015
    Location
    Arnprior, Ontario Canada
    Posts
    21

    Question Need to lower TA

    Question! My TA is at 180, is this too high, do I need to lower it? Using the HTH 6-way test strips my readings are as follows FAC = 3; TCI = 3; Alk = 180; pH = 7.8; CyA = 30-50. Aquarius 3 way testing is FC = 3 and pH = 7.8 Salt is at 4140.
    Intex Ultra frame 16'x48" above ground; Intex 2800 GPH Sand Filter Pump; Intex Krystal Clear Saltwater System Model# CG-28669; Hayward H100ID1 gas pool heater.

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Need to lower TA

    Welcome!

    No, you don't need to aggressively lower TA. But you do need to lower the pH. Lowering the pH will slightly lower TA. Just keep the pH in range and TA will come down over time.

    You would do well to buy a better test kit. Strips are not reliable. The colors can bleed or bleach out with high FC levels, and if they get damp, they might appear to work but they won't be accurate. You're at a disadvantage in Canuckistan because TFtestkits can't ship there and the good Taylor test kits are massively overpriced up there.
    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
    May 2015
    Location
    Arnprior, Ontario Canada
    Posts
    21

    Re: Need to lower TA

    Quote Originally Posted by Bon View Post
    Question! My TA is at 180, is this too high, do I need to lower it? Using the HTH 6-way test strips my readings are as follows FAC = 3; TCI = 3; Alk = 180; pH = 7.8; CyA = 30-50. Aquarius 3 way testing is FC = 3 and pH = 7.8 Salt is at 4140.
    Thanks Richard320!
    I should have mentioned that the Aquarius 3 way is OTO. I did the poolmath, it's recommending that I add muriatic acid in which I don't have. I have the HTH pH minus, will this do the same? If so, how long do I wait to do the test again?
    Intex Ultra frame 16'x48" above ground; Intex 2800 GPH Sand Filter Pump; Intex Krystal Clear Saltwater System Model# CG-28669; Hayward H100ID1 gas pool heater.

  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Need to lower TA

    Quote Originally Posted by Bon View Post
    Thanks Richard320!
    I should have mentioned that the Aquarius 3 way is OTO. I did the poolmath, it's recommending that I add muriatic acid in which I don't have. I have the HTH pH minus, will this do the same? If so, how long do I wait to do the test again?
    The dry acid pH Minus will do the same thing. Since you have it, use it. But when it's gone, hunt for some Muriatic Acid. It's generally cheaper and doesn't add Sulfates to the water.

    If you've got things set up to aerate vigorously, a couple hours ought to be sufficient to see the pH rise again. From personal experience, the first round knocks TA down a lot. Each additional pH adjustment requires less acid and gets less TA drop and takes longer for the pH to rise again. So just expect it, and don't panic if things seem to be slowing down.
    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!

  5. Back To Top    #5

    Join Date
    May 2015
    Location
    Arnprior, Ontario Canada
    Posts
    21

    Re: Need to lower TA

    Quote Originally Posted by Richard320 View Post
    The dry acid pH Minus will do the same thing. Since you have it, use it. But when it's gone, hunt for some Muriatic Acid. It's generally cheaper and doesn't add Sulfates to the water.

    If you've got things set up to aerate vigorously, a couple hours ought to be sufficient to see the pH rise again. From personal experience, the first round knocks TA down a lot. Each additional pH adjustment requires less acid and gets less TA drop and takes longer for the pH to rise again. So just expect it, and don't panic if things seem to be slowing down.
    Great!!, GTG and lower the pH! Thanks a bunch!!
    Intex Ultra frame 16'x48" above ground; Intex 2800 GPH Sand Filter Pump; Intex Krystal Clear Saltwater System Model# CG-28669; Hayward H100ID1 gas pool heater.

  6. Back To Top    #6
    BoDarville's Avatar
    Join Date
    Jun 2012
    Location
    DFW, Texas
    Posts
    3,840

    Re: Need to lower TA

    You've already been given some good advice so I will merely welcome you to TFP!
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

  7. Back To Top    #7

    Join Date
    May 2015
    Location
    Arnprior, Ontario Canada
    Posts
    21

    Re: Need to lower TA

    Ok, so I backwashed my filter with the intensions of removing water because the salt level was too high (4140). I added more water, tested the salt level the next morning and it was too low (1970). Added more salt (now @ 2310), it's rising however about an hour later, the pool seemed to be cloudy.

    I just tested the water balance and my readings are as follows using Aquarius 3 way OTO test FC = 3; pH = 7.8.

    Using the HTH test strips readings are as follows... FAC = 3; TCI = 3; AlK = 180; pH = 7.8; TH= 250; CyA = 0.

    I know I still need to get my salt up to 3000 - 3400 I'm not concerned about that as my SWG isn't alarming. I need to know if I should add shock to the water or do I add something else such as pH minus or a stabilizer to bring up the CyA?

    Thanks in advance!
    Intex Ultra frame 16'x48" above ground; Intex 2800 GPH Sand Filter Pump; Intex Krystal Clear Saltwater System Model# CG-28669; Hayward H100ID1 gas pool heater.

  8. Back To Top    #8
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: Need to lower TA

    It takes about 24 hours for salt to dissolve fully and register on the test. You add CYA/stabilizer to increase CYA. See recommended chemicals link below.

    Here are some intro Pool School articles
    TFPC for Beginners
    ABC's of Pool Water Chemistry

    Here is the Water Balance for a SWCG pool.
    Here are the Recommended Pool Chemicals to maintain yojr pool and how to add them.
    Use PoolMath to figure out how much to add.
    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

  9. Back To Top    #9
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Need to lower TA

    Welcome bon. Hope things are working out for you
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  10. Back To Top    #10

    Join Date
    May 2015
    Location
    Arnprior, Ontario Canada
    Posts
    21

    Re: Need to lower TA

    Quote Originally Posted by Casey View Post
    Welcome bon. Hope things are working out for you
    Thank you Casey, I'm still trying to raise my CyA, I've been adding stabilizer a little at a time. I just added the recommended amount needed according to the poolmath. Hopefully this will do it. This is my third year with the pool, my first year opening it up as it's an intex pool, you normally take it down and store it for the winter. All my other chemicals are good for now.
    Intex Ultra frame 16'x48" above ground; Intex 2800 GPH Sand Filter Pump; Intex Krystal Clear Saltwater System Model# CG-28669; Hayward H100ID1 gas pool heater.

Posting Permissions

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