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Thread: Muratic Acid

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    dhimpel's Avatar
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    Muratic Acid

    What are the best brands of muratic acid and where can I find it?


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    Mod Squad tim5055's Avatar
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    Re: Muratic Acid

    I can't think of any reason to worry about brands. It is available in most big box stores, generally in the paint department. I get mine at Lowes. They stock the full strength 31% (20 baume) and the "low fume" half strength. You pay the same for both types, so I go wit the full strength stuff.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Muratic Acid

    Muriatic Acid is Muriatic Acid, just like salt is salt. Brands really don't mean much.

    Pool stores sell it, as do a lot of big box hardware stores. Sometimes they have it out in the patio section where the pool stuff is, and sometimes it's in the paint section because it's used to etch concrete before painting. Check the strength. A lot of times they cut it 50% to call it safe or low-fuming, without cutting the price. Standard strength is 31.45% also called 20 Baum. That's some archaic measurement, don't ask me what it means.

    Have you read Pool School - Recommended Pool Chemicals ? It tells you what chemical does what and how to add it.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Muratic Acid

    Thanks guys!! I should of looked around the sight more before I asked.


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    Texas Splash's Avatar
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    Re: Muratic Acid

    Here's a couple examples:
    Muriatic Acid (Home Depot):

    Muriatic Acid (Lowes):
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    Mod Squad pooldv's Avatar
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    Re: Muratic Acid

    Here is the secret decoder ring for pool chemicals, Pool School - Recommended Pool Chemicals

    Our Lowes has both strengths in the paint section same price for either strength and 31.45% in the pool section. It just occurred to me that I should check the price to see if one is cheaper, they are definitely different brands.
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    Re: Muratic Acid

    Quote Originally Posted by pooldv View Post
    Here is the secret decoder ring for pool chemicals, Pool School - Recommended Pool Chemicals

    Our Lowes has both strengths in the paint section same price for either strength and 31.45% in the pool section. It just occurred to me that I should check the price to see if one is cheaper, they are definitely different brands.
    I checked just this thing at our Lowes south of DFW and it was cheaper in the pool/patio area.
    28,000 gallon freeform, Stonescapes Tropics Blue Minipebble with abalone, 3.5' to 8.5' depth. 2 skimmers, 5 returns, dedicated vacuum port, Dolphin Z5 robot. All Pentair equip: EasyTouch 8, IC60 SWG, VS pump, 520 Cartridge Filter, 3 Intellibrites, 2 Color Cascade Bubblers. TurboTwister Slide and 8' Salt System Jump Board. TF-100. My Jan-Mar 2016 build:
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    Mod Squad pooldv's Avatar
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    Re: Muratic Acid

    Sheewww, good news, that's where I get mine.
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    Re: Muratic Acid

    Thanks. I'm picking some up at Lowe's tonight. My slam is almost done and I'm ready to start the slow process of bringing down my TA.


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    Re: Muratic Acid

    I had been buying muriatic acid at Lowe's or Home Depot but they both only carry the low odor now. It is garbage, do not buy it. It's watered down and takes twice as much and it's the same price as full strength. I found the full strength at my local hardware for $1 less than the big box. I think the paint stores may be a good place to buy it as well. The brand I bought is Sunnyside. Be careful with this stuff. Read directions! A good whiff of this stuff can do permanent lung damage.
    12,500 Gallon fiberglass, chlorine,1 skimmer, 2 returns adjustable eyes, sand filter, automatic chlorinator (don't use except for vacation or if CYA gets low), 1-1/2 hp EcoTech motor on Pentaire Supeflo pump some trees.

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    Mod Squad pooldv's Avatar
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    Re: Muratic Acid

    Our Lowes has both strengths right next to each other in the paint department and 31.45% in the pool section near the garden area.
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    Re: Muratic Acid

    how much are you guys paying? I paid $9 for a gallon at my local Ace Hardware the other day, and felt like that was quite high. I haven't seen it at my Lowes or Home Depot in their pool sections, but I'll check the paint departments next time I'm there.

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    Re: Muratic Acid

    I found it at Lowe's in the paint section for $7.50 a gallon.


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    Re: Muratic Acid

    Quote Originally Posted by astallings View Post
    I had been buying muriatic acid at Lowe's or Home Depot but they both only carry the low odor now. It is garbage, do not buy it. It's watered down and takes twice as much and it's the same price as full strength. I found the full strength at my local hardware for $1 less than the big box. I think the paint stores may be a good place to buy it as well. The brand I bought is Sunnyside. Be careful with this stuff. Read directions! A good whiff of this stuff can do permanent lung damage.
    This exactly why I will only buy the low odor stuff now. After dealing with the extremely hazardous fumes of the full strength stuff on calm mornings, I'll pay a little more for the lower strength, low fume stuff to avoid those "puke inducing" fumes!
    The Pool Factory Melenia 30'x54" Round semi-inground pool 25ga overlap liner
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    ~22,000 gallons

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    Re: Muratic Acid

    Quote Originally Posted by Cap'n Hook View Post
    This exactly why I will only buy the low odor stuff now. After dealing with the extremely hazardous fumes of the full strength stuff on calm mornings, I'll pay a little more for the lower strength, low fume stuff to avoid those "puke inducing" fumes!
    Is there a preferred method of adding? I have been taking a bucket 1/2 full of water and putting the acid in that first. Then pouring from the bucket to the pool.
    18,000 gal, IG kidney w/ spa, Pebbletech, 60 DE filter, 2 skimmers, auto chlorinator, 2.0 hp pump, Dolphin M400

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    Pool Tool's Avatar
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    Re: Muratic Acid

    I don't think there is a formally preferred method but try to stay upwind and its usually suggested to only handle it once since it fumes more when poured, i.e. pour directly into the pool. It can be difficult to measure that way, but I usually go light and then retest, and repeat. Its a ball park thing to me.

    The only note I'll have is that if you wear a mask, make sure it protects your eyes as well. There was an event where a member damaged their eyes, albeit i don't believe permanently, because the mask was filtering their nose and lungs but their eyes were exposed. By the time their eyes burned it caused a lot of discomfort and doctor visits.
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    Re: Muratic Acid

    I am not finding any full strength stuff easily so far. I have been to Home Depot and Orchard Supply Hardware so far. Home Depot didn't have anything labeled Muriatic acid in the pool section, just a bunch of the HDX branded products. In the paint section they had a bottle that said "90% less fumes" but I couldn't find a strength on the bottle. OSH had the same container in the paint section, and in the pool section they had Kem-tech brand MA, but it's only 14.5%. That's what I ended up buying because we had nothing at all and we're just starting out. Lowes is too far to make it worth our while. It doesn't seem to be as common to find here. Of course, there is a Leslie's a few blocks from here, but I've never been in there yet.
    Tracy and Eric
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    Mod Squad tim5055's Avatar
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    Re: Muratic Acid

    Quote Originally Posted by ButterflyPool View Post
    I am not finding any full strength stuff easily so far. I have been to Home Depot and Orchard Supply Hardware so far. Home Depot didn't have anything labeled Muriatic acid in the pool section, just a bunch of the HDX branded products. In the paint section they had a bottle that said "90% less fumes" but I couldn't find a strength on the bottle. OSH had the same container in the paint section, and in the pool section they had Kem-tech brand MA, but it's only 14.5%. That's what I ended up buying because we had nothing at all and we're just starting out. Lowes is too far to make it worth our while. It doesn't seem to be as common to find here. Of course, there is a Leslie's a few blocks from here, but I've never been in there yet.
    It seems many stores are cutting back on the full strength stuff in favor of the "low fume" half strength stuff. As an example, my Lowes no longer carries the full strength, only the half strength. But, I found out my local mom/pop pool store sells full strength for less than Lowes was selling it for. So, I'm back to the pool store for at least one thing.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Meadow's Avatar
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    Re: Muratic Acid

    Quote Originally Posted by ButterflyPool View Post
    I am not finding any full strength stuff easily so far. I have been to Home Depot and Orchard Supply Hardware so far. Home Depot didn't have anything labeled Muriatic acid in the pool section, just a bunch of the HDX branded products. In the paint section they had a bottle that said "90% less fumes" but I couldn't find a strength on the bottle. OSH had the same container in the paint section, and in the pool section they had Kem-tech brand MA, but it's only 14.5%. That's what I ended up buying because we had nothing at all and we're just starting out. Lowes is too far to make it worth our while. It doesn't seem to be as common to find here. Of course, there is a Leslie's a few blocks from here, but I've never been in there yet.
    Dunno about OSH but where I live, HD and Lowes has the 31.45% in their paint section. Both stores has plenty of the 14.5% (Lowes carries Kemtek and HD has the HDX) in the pool section. The latter is more expensive though. I normally go to nearby Leslie's for MA (31.45%). A pack of 2 gals is $14.99 + tax (88 cents cheaper than buying individual bottle from Lowes @7.88).
    20k gallons, IG plaster with raised Spa, Hayward C-4000 cartridge, Hayward TriStar SP3202VSP, Hayward H400 gas heater, Hayward Super II (2HP) Spa jets, Hayward Swimpure Plus T-15,
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    Re: Muratic Acid

    Where I live, neither Lowes or Home Depot carry full strength. My local ace harware does, but it's like $8 a gallon. If you have any farm supply type stores near you, check there. Or Menards. My rural king carries full strength MA (same brand as Ace) for $4 a gallon, and Menards has it for $5.

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