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Thread: Muriatic acid vs alternatives?

  1. Back To Top    #1

    Join Date
    Sep 2008
    Location
    Hanover, PA
    Posts
    11

    Muriatic acid vs alternatives?

    My pool builder was out yesterday installing a conversion kit for my filter system. During his visit my wife filled him in on our use of the BBB method. He was not opposed to it (BBB) but relayed a caution/warning about using muriatic acid. He stated that muriatic acid in vinyl pools can cause two specific problems 1) damage to the liner and 2) costly damage to the heater. This post in not intended to malign my pool builder I'm sure his caution was given with the best of intentions. I was wondering if there is any validity to his statement and if so what alternative would be available.
    Vinyl In Ground 36x18 (26,500 Gal.),Jacuzzi TRICLOPS TC300. Two speed pump by Hayward (.25-1.5HP). Hayward H series gas heater (400,000 BTU)

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    Join Date
    Jan 2009
    Location
    Cupertino, CA
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    1,966

    Re: Muriatic acid vs alternatives?

    if you dribble it on, or let it puddle on, the liner then that could be a problem. Not going to damage the heater unless you pour it in the skimmer, I think.

    If you pour it slowly in front of a return jet, the circulation will disperse it pretty well. When the sun is out, I can see the acid as I'm pouring it in, it makes distinctive swirly shadows on the bottom; I wait for that to go away then do the next ounce or two.

    You could brush afterwards just to be belt-and-suspenders about it.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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    frustratedpoolmom's Avatar
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    May 2007
    Location
    SWSuburban Chicago, IL
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    11,965

    Re: Muriatic acid vs alternatives?

    Muratic Acid, poured slowly in front of the return, keeping the pump running is perfectly safe. You do of course want to calculate your dosages carefully so as not result in very low PH which is what the resulting problems stem from, low PH. The same thing could happen from longterm use of trichlor tablets which also lower PH. Never pour Muratic Acid into the skimmer. Remember to take precautions when using the chemical, like not breathing the fumes, protective glasses/clothing. etc.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  4. Back To Top    #4

    Join Date
    Sep 2008
    Location
    Hanover, PA
    Posts
    11

    Re: Muriatic acid vs alternatives?

    Thanks for the quick responses.
    I thought he was being a little overly cautious.
    I do apply the acid per the TFP prescription.
    Vinyl In Ground 36x18 (26,500 Gal.),Jacuzzi TRICLOPS TC300. Two speed pump by Hayward (.25-1.5HP). Hayward H series gas heater (400,000 BTU)

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