Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: 10 Month old Plaster with waterfall from Spa

  1. Back To Top    #1

    Join Date
    Jan 2012
    Location
    Round rock texas
    Posts
    18

    10 Month old Plaster with waterfall from Spa

    I'm still struggling with PH and TA. I realize the two Spa waterfalls into pool will raise PH and the new plaster will also do this. My CH has been fairly constant and currently 250. With the rising PH I'm needing to add acid on a regular basis and this is lowering the TA, so also needing to raise TA on a weekly basis. Seems like my situation likes to stay closer 80 TA instead of 110. I do have some scaling but only right around the spa/waterfall feature. Any suggestions how I can reduce the number of corrections I need to make and create a more stable environment?

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: 10 Month old Plaster with waterfall from Spa

    There is nothing wrong with having a lower TA ... in fact if you leave it lower, it will help to hold your pH from rising.

    Where did you see a recommendation of 110? Recommended Levels shows a recommended level of 70-90+ or even lower (60-80) for SWG because the SWG tends to pull the pH up as well.

    Just continue adding acid to keep the pH in check. Maybe occasionally test the TA, but don't worry too much about it.

    The "scaling" you see on the waterfall could just be due to evaporation of the water when it is off leaving behind the calcium. Post a full set of numbers and we can see if anything could be adjusted to help:
    FC = x
    CC = x
    pH = x
    TA = x
    CH = x
    CYA = x
    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!

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: 10 Month old Plaster with waterfall from Spa

    Just to add a little to what jblizzle said, the primary reason your PH is constantly going up is because your TA is so high. Let the TA come down until it either gets down to 60 or the PH stabilizes.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4

    Join Date
    Jan 2012
    Location
    Round rock texas
    Posts
    18

    Re: 10 Month old Plaster with waterfall from Spa

    Thanks. The recommended test kit (TF-100) says 100-120 for normal pools. My other stats. FC 3, CC 0, CYA 30. My PH varies by day but I try to keep it between 7.4 and 7.8.

  5. Back To Top    #5

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,082

    Re: 10 Month old Plaster with waterfall from Spa

    The recommended test kit (TF-100) says 100-120 for normal pools
    Works for most pools but many SWG pools do better with it lower. Take TA on down some more as Jason and Jason have suggested.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  6. Back To Top    #6

    Join Date
    Jan 2012
    Location
    Round rock texas
    Posts
    18

    Re: 10 Month old Plaster with waterfall from Spa

    I don't have a SWG pool. But in general I think both of you are right, 110 is on high side and causing extra PH rise for me. I'm lowing it down gradually and see where PH becomes more stable.

  7. Back To Top    #7
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: 10 Month old Plaster with waterfall from Spa

    I just mentioned the SWG levels to point out that a TA level of 60 is still within recommended ranges. You may stabilize above that level anyway.

    Posted with Tapatalk ... sorry if I sound short ... hate typing on phone
    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
  •