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

Thread: Fill Water Test

  1. Back To Top    #1

    Join Date
    Jul 2016
    Location
    DFW
    Posts
    40

    Fill Water Test

    After a couple months of ground water weeping, we are finally getting plaster this week! Tested my fill water this weekend and the results are:

    PH - 8.2
    TA - 110
    CH - 110
    Chlorine - .5

    Anything I should be aware of based on these numbers? I know I'll need some muriatic acid to lower the TA so will this also lower the PH? Looking at the manufacturers instructions it says "pH should be reduced to 7.2 to 7.6 adding pre-diluted2 Muriatic Acid if the alkalinity is already 80-100 ppm1"
    Owner Build in DFW - In-ground 13,500 gallons. Jandy 2 HP Variable Speed, Zodiac 1.5 HP Blower.Hayward 400 DP Propane Heater, Polaris Vac-Sweep 360, Pentair Quad 60 DE Cartridge Style Filter, Micro Fusion Pebble, Taylor K-2006 Test Kit

  2. Back To Top    #2
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    17,321

    Re: Fill Water Test

    Actually, what you just did is simply good practice. Your numbers aren't too crazy compared to other parts of the country. But yes, you'll want an ample amount of muriatic acid on-hand once the pool is filled. Not so much for the TA, but more for the pH as it will climb quickly as the plaster cures. With continuous treatments upon the pH, the TA should begin to fall as well. But the pH is most critical because it impacts the plaster the fastest.

    I always tell new pool owners to watch and record what the builder puts in your water on opening day. Write-down product type, name, and dosage amounts if you can. Review the TFP Pool School - Start-up New Plaster page in advance so you can understand and compare these notes to what your builder has to say. Of course your builder's opening instructions take priority to honor your warranty, but it's good info to know in advance. Opening day can be overwhelming.

    Use typically recommend muriatic acid (20 Baume @ 31.45% strength). You can get it at your local pool store or hardware store. You know you'll need to maintain a reasonable chlorine level to prevent algae from growing, so make sure to ask your builder if they have any concerns about managing your FC level with liquid chlorine (aka - regular bleach).

    Congrats on the new pool! Ask us any questions you may have, and don't forget to post a pic or two once you get all filled-up.
    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

    Join Date
    Jul 2016
    Location
    DFW
    Posts
    40

    Re: Fill Water Test

    Quote Originally Posted by Texas Splash View Post
    Actually, what you just did is simply good practice. Your numbers aren't too crazy compared to other parts of the country. But yes, you'll want an ample amount of muriatic acid on-hand once the pool is filled. Not so much for the TA, but more for the pH as it will climb quickly as the plaster cures. With continuous treatments upon the pH, the TA should begin to fall as well. But the pH is most critical because it impacts the plaster the fastest.

    I always tell new pool owners to watch and record what the builder puts in your water on opening day. Write-down product type, name, and dosage amounts if you can. Review the TFP Pool School - Start-up New Plaster page in advance so you can understand and compare these notes to what your builder has to say. Of course your builder's opening instructions take priority to honor your warranty, but it's good info to know in advance. Opening day can be overwhelming.

    Use typically recommend muriatic acid (20 Baume @ 31.45% strength). You can get it at your local pool store or hardware store. You know you'll need to maintain a reasonable chlorine level to prevent algae from growing, so make sure to ask your builder if they have any concerns about managing your FC level with liquid chlorine (aka - regular bleach).

    Congrats on the new pool! Ask us any questions you may have, and don't forget to post a pic or two once you get all filled-up.
    Appreciate the info! I am OB so it's all on me. As far as pH, how many times should I be checking this each day? I work out of the house so it's not an issue but I didn't know if those numbers could change a few times a day or if checking once a day is enough.
    Owner Build in DFW - In-ground 13,500 gallons. Jandy 2 HP Variable Speed, Zodiac 1.5 HP Blower.Hayward 400 DP Propane Heater, Polaris Vac-Sweep 360, Pentair Quad 60 DE Cartridge Style Filter, Micro Fusion Pebble, Taylor K-2006 Test Kit

  4. Back To Top    #4
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    17,321

    Re: Fill Water Test

    In a new pool, I'd check the pH once a day for the first month or so, then slowly space it out as acid usage appears to settle. You'll see a pattern of pH increase and usage that will help dictate how often you need to test pH.
    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!

  5. Back To Top    #5

    Join Date
    Jul 2016
    Location
    DFW
    Posts
    40

    Re: Fill Water Test

    Quote Originally Posted by Texas Splash View Post
    In a new pool, I'd check the pH once a day for the first month or so, then slowly space it out as acid usage appears to settle. You'll see a pattern of pH increase and usage that will help dictate how often you need to test pH.
    Thanks again! In reading through pool school, I see there are a few different start up processes. Do you recommend one? I noticed the acid startup says to pour in 3.5 gallons acid per 10,000 gallons and don't turn circulation system on until pH reaches 7.2 or higher. Traditional mentions starting equipment right away but no mention of acid. We are going with Micro Fusion Pebble so am I correct in going with an acid start-up?
    Owner Build in DFW - In-ground 13,500 gallons. Jandy 2 HP Variable Speed, Zodiac 1.5 HP Blower.Hayward 400 DP Propane Heater, Polaris Vac-Sweep 360, Pentair Quad 60 DE Cartridge Style Filter, Micro Fusion Pebble, Taylor K-2006 Test Kit

  6. Back To Top    #6
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    17,321

    Re: Fill Water Test

    I'm not too familiar with the Micro Fusion Pebble, so I'll have to defer that question to one of the plaster experts. I did find this though:
    Micro Fusion pebble finish?? Rain
    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!

Posting Permissions

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