Muriatic Acid Vs "Green" Muriatic Acid

1poolguy

Well-known member
Jul 13, 2014
59
Raleigh, NC
I went to Lowes's to buy Muriatic Acid and they sell both "Green" and regular Muriatic Acid. They were out of the regular which is all that I have been using so I bought some of the "Green" and used it in my pool. What is the difference and which one is better for a pool. I like the low fume of the "Green".
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,470
Laughlin, NV
The Green is normally about half strength. So you can use it, be sure to adjust to the right strength in PoolMath. It costs about twice per effective amount of acid, but up to you.
 

1poolguy

Well-known member
Jul 13, 2014
59
Raleigh, NC
mknauss

Thanks for the reply. The "Green" bottle did not list the concentration but I thought it must be diluted because it is taking much more to bring down the PH.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,470
Laughlin, NV
Google the brand. They have to have a MSDS for the product. It will state its concentration. Normally 20% or 14.5% vs the full strength 31.45%
 

BMeeley

Bronze Supporter
Oct 13, 2017
104
Woodbridge, VA
Yep. I just discovered this myself. Headed back to the home store to exchange "green" for regular. It's the same price, but no details on the label. Live and learn. Plus, there is no 20% option in Pool Math, so using this would feel like a step backward toward the guessing game.

TFP Rookie schooling in the house of really-not-so-hard knocks.... :cool: