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Thread: Muratic Acid from paint dept

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    Muratic Acid from paint dept

    Need to lower pH a bit and found Muratic Acid at WMart by Kleen Strip Green. Couldn't find percentage on label for Poolmath so called mfg. Told me 20-1/2% with Baume' of 13. Numbers not offered in Poolmath drop down to figure quantity to add. Anyone help?

    Thanks.
    19300 gal, AG vinyl, 1 HP Pentair Dynamo two stage pump, 5 yr old Hayward Vari-Flo sand filter, pool 14 yrs old, well water, testing with Taylor K2006

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    Texas Splash's Avatar
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    Re: Muratic Acid from paint dept

    Some of those brands have varied percentages. If you buy that brand, you might have to use the low end on the calculator and just keep re-dosing/testing. If you find yourself near a Home Depot or Lowes you could look for one of these:
    Muriatic Acid (Home Depot):

    Muriatic Acid (Lowes):
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    Re: Muratic Acid from paint dept

    For 20.5% MA, use 15.7% in pool math and multiply what it tells you by 0.766.

    15.7 / 20.5 = 0.766
    16k AG Vinyl Sand Filter

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    Re: Muratic Acid from paint dept

    Thank you for the help.
    19300 gal, AG vinyl, 1 HP Pentair Dynamo two stage pump, 5 yr old Hayward Vari-Flo sand filter, pool 14 yrs old, well water, testing with Taylor K2006

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    Re: Muratic Acid from paint dept

    I have noticed at my local HD the stuff in the paint dept cost about 50% more per gallon than the stuff for pools in the garden dept. Same strength just different manufacture.
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

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    Re: Muratic Acid from paint dept

    Quote Originally Posted by atttech-2 View Post
    I have noticed at my local HD the stuff in the paint dept cost about 50% more per gallon than the stuff for pools in the garden dept. Same strength just different manufacture.
    That's kind of backwards. Usually anything with "pool" on it or located in the pool section costs 50% more!
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    Re: Muratic Acid from paint dept

    Quote Originally Posted by JVTrain View Post
    That's kind of backwards. Usually anything with "pool" on it or located in the pool section costs 50% more!


    Isn't that the truth !!
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    Re: Muratic Acid from paint dept

    At Lowes, the Kem-Tek 2 1-gallon pack is $13.48. It is the 20 Baume 31.45% and is in the Garden Center with all the other pool chems.
    Marla
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    Re: Muratic Acid from paint dept

    The stuff from WM paint is a gallon (supposed to have 90% less voc than regular MA) for $6.88. It was handy.
    19300 gal, AG vinyl, 1 HP Pentair Dynamo two stage pump, 5 yr old Hayward Vari-Flo sand filter, pool 14 yrs old, well water, testing with Taylor K2006

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    Re: Muratic Acid from paint dept

    Home Depot has the same brand and the same 2-1 gallon pack for $10.98.


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    Re: Muratic Acid from paint dept

    Quote Originally Posted by kschmidt1 View Post
    The stuff from WM paint is a gallon (supposed to have 90% less voc than regular MA) for $6.88. It was handy.
    I think the "90% less VOC" claim just comes from it being lower strength (20% vs 31.45%), thus you will need more for a given pH change. For paint stripping that's probably a good tradeoff; for the pool it may or may not be depending on how you manage it.

    My local Home Depots usually have 2 varieties of 2x1gal Kemtek or HDX (more recently) in the garden center, often in the same stack so you have to check the label -- 31.45% for $11.98 or 14.5% for $10.98. Obviously the higher strength is a far better value and is what I buy, but some may choose the lower because it does fume less (see the Decanting Acid thread and others for discussion on methods).
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    Re: Muratic Acid from paint dept

    I'll let you know. smackdab gave a calculation to figure using different strength in Poolmath. We'll see how that worked out. Nothing to lose. Still too high, add more. Too low, add borax. I did purchase 1/2 gal at local ACE while back of full strength for $3.99. Again, easy access.
    19300 gal, AG vinyl, 1 HP Pentair Dynamo two stage pump, 5 yr old Hayward Vari-Flo sand filter, pool 14 yrs old, well water, testing with Taylor K2006

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    Re: Muratic Acid from paint dept

    Quote Originally Posted by JVTrain View Post
    That's kind of backwards. Usually anything with "pool" on it or located in the pool section costs 50% more!
    It's reverse Pool Store psychology, clearly the stuff in the paint isle has the super secret special ingredients to clean concrete that mere pool acid can't.
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

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    Re: Muratic Acid from paint dept

    smackdab your calculation was correct. Thanks.
    19300 gal, AG vinyl, 1 HP Pentair Dynamo two stage pump, 5 yr old Hayward Vari-Flo sand filter, pool 14 yrs old, well water, testing with Taylor K2006

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