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Thread: How much borax to add?

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    TripleB4me's Avatar
    Join Date
    Jun 2007
    I used the pool calculator and it says I would need to add about 88 lbs of Borax to get 50 ppm of borates into my 25000 gal pool. Is this correct?
    20x40 IG Vinyl, 1.5 HP Whisperflo, Sta-Rite System 3 (300) Sq. ft Cart
    Intellichlor IC40 SWCG, 125,000 BTU Pentair heatpump, Polaris 280
    7' IG FG Spa, 2 HP Whisperflo, Pentair Dynamic III Cart (100) Sq. ft

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD
    I calculate 92 lbs of borax and 5 3/4 gallons of 31% muriatic acid to raise borates by 50 in 25,000 gallons.
    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

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