Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: pool opening / slam ph high?

  1. Back To Top    #1

    pool opening / slam ph high?

    I opened the pool yesterday and slammed it. Ph is high how long should I be concerned with ph before I need to reduce it??
    18x38 IG
    Appox. 85000litres
    Jacuzzi laser sand filter
    1hp pump
    Municipal water

  2. Back To Top    #2
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,975

    Re: pool opening / slam ph high?

    PH is actually supposed to be at 7.2-7.5 before starting the SLAM. At this point, continue with the SLAM (thoroughly) by maintaining it until you pass all 3 criteria. Don't let that FC SLAM level drop. Once the SLAM is done, then you can go back and adjust the PH.

    - - - Updated - - -

    The 3 SLAM objectives are:
    1. Water is clear
    2. You do not lose any more than 1ppm of FC overnight (that's the OCLT)
    3. CC (Combined Chlorine) is <.5
    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
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: pool opening / slam ph high?

    I would slightly disagree with Pat.

    The pH test is not valid when FC > 10ppm.

    If the FC drops below 10ppm, test the pH and get it into the lower 7s before raising the FC level back to for the ShockLevelAndMAINTAIN Process.

    What test kit are you using?

    Please add your location (City, State or City, Country) to your profile as described HERE as it will help us help you.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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

    Re: pool opening / slam ph high?

    Your pH is probably not high.... or at least not as high as you think. High FC reacts with the phenol read and it falsely reads high pH. Photographic proof!
    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

    Re: pool opening / slam ph high?

    I used too much chlorine that's why I'm asking
    18x38 IG
    Appox. 85000litres
    Jacuzzi laser sand filter
    1hp pump
    Municipal water

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: pool opening / slam ph high?

    Quote Originally Posted by wantboost View Post
    I used too much chlorine that's why I'm asking
    This does not answer any of our questions from what I can see.

    Have you read the ShockLevelAndMAINTAIN Process? It is not a one time addition.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  7. Back To Top    #7
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: pool opening / slam ph high?

    Chlorine does not impact PH level. What was the PH level before you added the chlorine to get it over 10?
    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

  8. Back To Top    #8
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: pool opening / slam ph high?

    Well, adding bleach does in fact raise the pH. But as the chlorine is consumed, the pH drops back down making the birch effectively pH neutral.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

Posting Permissions

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