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

Thread: Ph Too High

  1. Back To Top    #1

    Ph Too High

    I am a new pool owner. I have a 28,000 gallon concrete pool with a salt system that was plastered a few weeks ago. The salt system has been operating for about a week. In the short time that the pool has been operating, I have not seen a Ph number below 8. I keep adding muriatic acid, but there is no downward movement in the Ph. I understand that newly plastered pools typically have high Ph, but is there anything I can do, or should do, to bring down the Ph? And, if the answer is to add acid, how much and how often. I have been adding anywhere from a couple of pints to a gallon about every other day. Thanks.

  2. Back To Top    #2

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,414
    The short answer is to keep adding acid. You need to get your pH in the 7's. Have you downloaded bleachcalc? It will tell you roughly how much acid you need to move your pH by .2 (28k pool needs 22oz of acid)

    Secondly, how are you testing? Confirm your results with another test kit or test method.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    Thanks. I think I saw the bleach calc, but does that help with Ph and acid? I have a kit that probably is not that great that my pool builder gave me. I have been using that and it is very obvious that the Ph is over 8. I also have taken in a sample to a pool store twice and each time they measured it at 8.4.

  4. Back To Top    #4

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,414
    Yeah, you need to get that pH down. 8+ is troublesome. I'd still get a pool store test or a better test kit and verify that your pH is up that high, If so, (and it probably is) just keep adding acid 'til you get it in a range more acceptable. I'm sure bleachcalc is available on this forum.....find it with a search and download it and use it....it'll calc acid for you.......it's a great tool that I use weekly.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5
    ktdave's Avatar
    Join Date
    May 2007
    Location
    Katy, TX
    Posts
    888
    Quote Originally Posted by duraleigh
    Yeah, you need to get that pH down. 8+ is troublesome. I'd still get a pool store test or a better test kit and verify that your pH is up that high, If so, (and it probably is) just keep adding acid 'til you get it in a range more acceptable. I'm sure bleachcalc is available on this forum.....find it with a search and download it and use it....it'll calc acid for you.......it's a great tool that I use weekly.
    And you need to buy a test kit from this guy!

    http://troublefreepool.com/viewtopic.php?t=259

    would be a wise investment!
    11,000 gal. gunite w/midnight blue and white pearl PebbleTec
    Intelliflo 4x160 pump
    Intellichlor IC-20 SWG
    Pentair cartridge filter 420 sq. ft.
    Mastertemp 400K BTU heater
    Legend Platinum cleaner
    Pool School
    JasonLion's Pool Calculator
    TF Test Kits

  6. Back To Top    #6
    Also, post your other numbers. This way the other members can give you advise. Like, your TA has to do alot with PH and how it bounces up and down.

    I'm a little concerned on the fact that salt has been added to your pool so early after being plastered. I have read that you should wait a month before adding salt and turning on your SWG. aybe some one can chime in and give input on this and whether you need to be concerned or not.

    I have a 24,000 gal plastered pool and after 4 weeks I am still adding acid every other day. I am adding about 40oz of acid per the Bleach Calc to lower .4, My pool usually hovers around 7.8 to 8.0 ph. I have been told to expect this to continue 8weeks to possibly 6 months.

    You wrote, "I keep adding muriatic acid, but there is no downward movement in the Ph" How much are you adding and what strength is the acid. (% on the bottle).

    Lastly, as eveyone mentioned, get a good test kit. It is simple and well worth the money. It helps me sleep at night knowing that I have total control over my water chemistry.
    20x40 24,000 gal IG plaster/CircuPool RJ45 SWG/2 skimmer/2sp 2.5hp Jandy Stealth/340sq ft cart filter/600sqftHeliocol Solar Panels/6ft semi circlr tanning ledge/25ft deep end bench/5ft sheer descent/2 lion head water features/1300sqft travertine paver/2 Colorlogic lights/Hayward Navigator/3step 2ft raised bond beam

Posting Permissions

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