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

Thread: pH question

  1. Back To Top    #1

    Join Date
    Jul 2009
    Location
    Upstate New York
    Posts
    36

    pH question

    Pool chemistry:

    FC: 10
    TA 75
    pH: 7.1
    CYA: 0 (added the requisite amount of CYA to get to 80 ppm, waiting to test it again)
    Borates: 40

    Now, I have to raise the pH, right? I'll probably test it again later today when the FC will be lower (just finished superchlorinating). But to do that I have to add borax right? Is adding the 125 oz it will take to raise my pH going to have that much effect on my borate level? Now, isn't it a problem if I keep adding borax over time since borates don't degrade? Thanks.
    20,000 gal oval IG, vinyl liner. 1 HP Pentair Superflo pump. Intellichlor ic20 SWCG with easy touch, Sand Dollar SD80 sand filter, Taylor K-2006 test kit.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: pH question

    Yes, you should raise your PH a little.

    Using borax does raise the borate level, but it raises it so slowly that you will never accumulate a significant borate level that way. The quantity of borax you need to use to raise the borate level significantly is huge, 15 or 16 boxes of borax, and before you get anywhere near that you will be losing borax through splash out, and backwashing.
    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

  3. Back To Top    #3
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    9,004

    Re: pH question

    You can also just simply aereate the water to raise your PH.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  4. Back To Top    #4

    Join Date
    Jul 2009
    Location
    Upstate New York
    Posts
    36

    Re: pH question

    I always wondered how you aerate your pool. It's not like I have a couple of fountains I can turn on and off

    So, on the Pool Calculator, it asks your TA and borate level as well as your pH starting point. Why would the amount of borax change based on varying TA and borate levels?
    20,000 gal oval IG, vinyl liner. 1 HP Pentair Superflo pump. Intellichlor ic20 SWCG with easy touch, Sand Dollar SD80 sand filter, Taylor K-2006 test kit.

  5. Back To Top    #5
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: pH question

    TA and borates both buffer PH changes, the higher the TA and/or borate levels, the more acid/base you need to add to the water to get the PH to change.
    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

  6. Back To Top    #6

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: pH question

    Quote Originally Posted by hyperchord24
    I always wondered how you aerate your pool. It's not like I have a couple of fountains I can turn on and off :)
    If you have eyeball returns, you can point them upwards with the pump on high to create surface disturbance of the water. That's what I usually do in my pool when I want to aerate. Of course, you could make something like this!
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

Posting Permissions

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