Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 13 of 13

Thread: Minor scaling above water line

  1. Back To Top    #1
    clw72's Avatar
    Join Date
    Oct 2013
    Location
    Fort Worth, TX
    Posts
    66

    Minor scaling above water line

    Pool is 6 months old and I have fought high pH and high TA from the beginning. My numbers as of yesterday are:

    FC 5
    pH 7.8
    TA 150
    CH 290
    CYA 35
    Salt 3100

    There is some scaling on the water line tile just above the water line. I believe that's due to the pH and TA being too high for too long. I am in the process of lowering pH and aerating to get the TA down and I have added CYA granules to raise that number. Is there anything else I should be doing?
    Carman
    17K gallon IG pool w/Spa, 400,000 BTU Propane Hayward Heater, StoneScapes finish w/sealed Oklahoma Flagstone coping and tanning ledge, Hayward Aquarite Salt System, 60ft D.E. filter, Hayward Tristar 2 HP 2 speed pump, Polaris 280, Pro Logic PS4 w/freeze guard. New build December 2013. Pool gets full sun.

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,198

    Re: Minor scaling above water line

    Your plaster is still relatively new, and pH will continue to rise as it cures. It takes about a year for the process to complete and stop effecting the pH. Use muriatic acid or dry acid to lower pH & TA. Aeration raises pH without effecting TA levels, so that will not help your situation. You don't need to lower TA just for the sake of having a lower test value, once you are able to keep your pH fairly stable.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Minor scaling above water line

    A pumice stone will remove that water line. It will sound awful - fingernails on a chalkbooard X10 - but it doesn't destroy the tile surface the way it sounds like it's doing. It will also lead to sore shoulders and knees. There will also be a lot of pumice grit to vacuum up.
    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!

  4. Back To Top    #4
    clw72's Avatar
    Join Date
    Oct 2013
    Location
    Fort Worth, TX
    Posts
    66

    Re: Minor scaling above water line

    Quote Originally Posted by Richard320 View Post
    A pumice stone will remove that water line. It will sound awful - fingernails on a chalkbooard X10 - but it doesn't destroy the tile surface the way it sounds like it's doing. It will also lead to sore shoulders and knees. There will also be a lot of pumice grit to vacuum up.
    Well that sounds super fun!



    Carman
    17K gallon IG pool w/Spa, 400,000 BTU Propane Hayward Heater, StoneScapes finish w/sealed Oklahoma Flagstone coping and tanning ledge, Hayward Aquarite Salt System, 60ft D.E. filter, Hayward Tristar 2 HP 2 speed pump, Polaris 280, Pro Logic PS4 w/freeze guard. New build December 2013. Pool gets full sun.

  5. Back To Top    #5
    clw72's Avatar
    Join Date
    Oct 2013
    Location
    Fort Worth, TX
    Posts
    66

    Re: Minor scaling above water line

    Quote Originally Posted by zea3 View Post
    Your plaster is still relatively new, and pH will continue to rise as it cures. It takes about a year for the process to complete and stop effecting the pH. Use muriatic acid or dry acid to lower pH & TA. Aeration raises pH without effecting TA levels, so that will not help your situation. You don't need to lower TA just for the sake of having a lower test value, once you are able to keep your pH fairly stable.
    So, am I wasting my time aerating? High TA is okay for now? I'm so confused, because I've read other threads that say, lower pH with acid then aerate to raise pH repeating the cycle until TA is within range.


    Carman
    17K gallon IG pool w/Spa, 400,000 BTU Propane Hayward Heater, StoneScapes finish w/sealed Oklahoma Flagstone coping and tanning ledge, Hayward Aquarite Salt System, 60ft D.E. filter, Hayward Tristar 2 HP 2 speed pump, Polaris 280, Pro Logic PS4 w/freeze guard. New build December 2013. Pool gets full sun.

  6. Back To Top    #6
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,198

    Re: Minor scaling above water line

    TA helps regulate pH. If the TA level is causing problems then it should be adjusted, however your pH is going to climb naturally as the plaster continues to cure. Useing acid will lower both pH and TA, you just don't need to aerate to raise the pH back up, it will come up by itself. Once the pH starts to stabilize you won't have to worry about the TA regardless of how high it reads.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  7. Back To Top    #7
    clw72's Avatar
    Join Date
    Oct 2013
    Location
    Fort Worth, TX
    Posts
    66

    Re: Minor scaling above water line

    Quote Originally Posted by zea3 View Post
    TA helps regulate pH. If the TA level is causing problems then it should be adjusted, however your pH is going to climb naturally as the plaster continues to cure. Useing acid will lower both pH and TA, you just don't need to aerate to raise the pH back up, it will come up by itself. Once the pH starts to stabilize you won't have to worry about the TA regardless of how high it reads.
    Gotcha. Thanks for the explanation.


    Carman
    17K gallon IG pool w/Spa, 400,000 BTU Propane Hayward Heater, StoneScapes finish w/sealed Oklahoma Flagstone coping and tanning ledge, Hayward Aquarite Salt System, 60ft D.E. filter, Hayward Tristar 2 HP 2 speed pump, Polaris 280, Pro Logic PS4 w/freeze guard. New build December 2013. Pool gets full sun.

  8. Back To Top    #8

    Re: Minor scaling above water line

    I have a bit of that calcium build up as well on my new build pool. My PB suggested I mix 50/50 water and muriatic acid in a spray bottle and spay on the tile and then a little scrubbing. It actually worked perfect. Needed to add some acid to lower my PH so did while I was dosing the pool and it basically ate the scaling up without a lot of scrubbing.

  9. Back To Top    #9
    clw72's Avatar
    Join Date
    Oct 2013
    Location
    Fort Worth, TX
    Posts
    66

    Re: Minor scaling above water line

    Quote Originally Posted by Tresiarth View Post
    I have a bit of that calcium build up as well on my new build pool. My PB suggested I mix 50/50 water and muriatic acid in a spray bottle and spay on the tile and then a little scrubbing. It actually worked perfect. Needed to add some acid to lower my PH so did while I was dosing the pool and it basically ate the scaling up without a lot of scrubbing.
    Nice! I'll try that this week. Thanks for the tip.


    Carman
    17K gallon IG pool w/Spa, 400,000 BTU Propane Hayward Heater, StoneScapes finish w/sealed Oklahoma Flagstone coping and tanning ledge, Hayward Aquarite Salt System, 60ft D.E. filter, Hayward Tristar 2 HP 2 speed pump, Polaris 280, Pro Logic PS4 w/freeze guard. New build December 2013. Pool gets full sun.

  10. Back To Top    #10

    Re: Minor scaling above water line

    Quote Originally Posted by clw72 View Post
    Nice! I'll try that this week. Thanks for the tip.

    Sent from my iPhone using Tapatalk
    You will find it works well. Just be sure to use gloves and not lean too close to the tile to avoid splash back. Otherwise I let the acid do the work and avoided much scrubbing. I had one very large one; and just continued to spray let the acid eat it and spray again until it was basically gone. I bought some piece of **** calcium scrubber from Leslie that didn't even make a dent... so that is going back..... Also put your water in the spray bottle first... then add your acid.... following that rule of adding acid to water... not the other way around.
    In Ground 15X27 80 ft perimeter; 3'6 to 5' depth; 9600 gallons; 2 skimmers; 6 returns; Jandy VSP; 2 pool LED lights; 1 spa pool light; pebble tech aqua blue, North Texas build complete April 2014

  11. Back To Top    #11
    clw72's Avatar
    Join Date
    Oct 2013
    Location
    Fort Worth, TX
    Posts
    66

    Re: Minor scaling above water line

    Gotcha. Thank you so much!! I buy as little as possible from Leslie's. Even when they try to push products on me. I fell for that trap with our previous pool...thank goodness I found this forum when we started building our current pool!! 👍👍


    Carman
    17K gallon IG pool w/Spa, 400,000 BTU Propane Hayward Heater, StoneScapes finish w/sealed Oklahoma Flagstone coping and tanning ledge, Hayward Aquarite Salt System, 60ft D.E. filter, Hayward Tristar 2 HP 2 speed pump, Polaris 280, Pro Logic PS4 w/freeze guard. New build December 2013. Pool gets full sun.

  12. Back To Top    #12
    clw72's Avatar
    Join Date
    Oct 2013
    Location
    Fort Worth, TX
    Posts
    66

    Re: Minor scaling above water line

    The water/acid mix in a spray bottle worked perfectly!!! My water line tile looks brand new. Thank you so much for the tip! 👊


    Carman
    17K gallon IG pool w/Spa, 400,000 BTU Propane Hayward Heater, StoneScapes finish w/sealed Oklahoma Flagstone coping and tanning ledge, Hayward Aquarite Salt System, 60ft D.E. filter, Hayward Tristar 2 HP 2 speed pump, Polaris 280, Pro Logic PS4 w/freeze guard. New build December 2013. Pool gets full sun.

  13. Back To Top    #13

    Re: Minor scaling above water line

    Great!!! I am glad it worked for you!!!😀🏊


    In ground, 15x27, 80 feet perimeter, 3'6 to 5 feet deep, 9,600 gallons, 2 skimmers, 6 returns, Jandy VSP, Jandy DE 60, Jandy LXI, Nature 2 Ozone, 2 pool LED lights, 1 Spa LED light pebble tech aqua blue. Frisco,
    Texas


    In Ground 15X27 80 ft perimeter; 3'6 to 5' depth; 9600 gallons; 2 skimmers; 6 returns; Jandy VSP; 2 pool LED lights; 1 spa pool light; pebble tech aqua blue, North Texas build complete April 2014

Posting Permissions

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