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Thread: How much Boric Acid I need?

  1. Back To Top    #1

    Join Date
    Mar 2015
    South Texas

    How much Boric Acid I need?

    For some reason I can't get PoolMath to tell me how much Boric Acid I need from DuraDiesel. I have a 15,000 gallon pool (according to manufacturer). The PoolMath calculator puts it more like 19,000 gallons. It's a free form pool so maybe manufacturer is more accurate.

    Anyhoo.....can anyone tell me how much Boric Acid I would need to be be at 50ppm?

    thanks! BTW, new pool, currently no Borax added

    NVM, I was reversing "now" and "target". No wonder it was saying empty 100% of your pool! Ha! Answer was 35.8 lbs. Can anyone confirm this for me?
    15,000 gallon free form Viking fiberglass pool. Hayward Star-Clear Plus C12002 cartridge filter. Hayward Swim Pure Plus T-15 SWG. Testing with TF-100 Kit. 2 speed 1.5HP Supreme pump. Dolphin Nautilus robotic cleaner

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    DFW, TX

    Re: How much Boric Acid I need?

    There is a drop down menu to switch from Borax to Boric acid.

    15k gal pool 50 ppm needs Add 573oz by weight or 616oz by volume of Boric Acid.

    - - - Updated - - -

    aha!! Good catch! LOL empty your pool!
    TFP Moderator
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  3. Back To Top    #3

    Join Date
    Mar 2015

    Re: How much Boric Acid I need?

    You can go here and get the square feet of your pool by clicking the surrounding edges. There is still going to be some margin of error but will get you pretty close. Make sure you zoom in as far as you can on your pool and click alot of points.

    Square Feet * Average Depth * 7.48 = your total gallons
    16k AG Vinyl Sand Filter

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