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Thread: Does Muriatic acid go bad over time

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    guamguy's Avatar
    Join Date
    Feb 2010
    Guam, USA

    Does Muriatic acid go bad over time

    I found a gallon of MA in a storage closet at my house. It's probably a good 3-5 years old. Does anyone know if it would still be OK to use, or does this stuff loose strength or go bad after long periods of storage? Thanks
    12,800 gallon IG plaster kidney-shaped pool, waterslide, 800 gallon spa.
    1HP 2 speed Sta-Rite pool pump, 1.5 HP Sta-Rite spa jet pump. 2 skimmers, 1 main drain
    Purex-Triton TR-60 325 lb.sand filter. 2" Plumbing, Intex SWCG, TF-100 test kit.
    Link to pics of my pool!

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Does Muriatic acid go bad over time

    Muriatic acid stays fresh for a good long time. If the container is still sealed it should be fine.
    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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