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Thread: ? about muriatic acid

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    ? about muriatic acid

    Does muriatic acid stay like cyanuric acid does? Or does it break down?
    11000 gal L shaped gunite pool with and aggragate plaster
    Pentair cartridge filtration with 1.5 hp pump
    only have 3 returns and one dedicated vacuum line
    manifold to pump is three valve

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: ? about muriatic acid

    It breaks down.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: ? about muriatic acid

    More specifically, it lowers the pH and TA and increases chloride (salt). Generally speaking, the amount of salt buildup from Muriatic Acid is far smaller than than from chlorine, but even that is a rather slow buildup since salt is rather innocuous except at much higher levels. With bleach or chlorinating liquid, at 2 ppm FC per day chlorine usage the salt increases by around 100 ppm per month if there is no water dilution.
    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"

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