Klean Strip Green Muriatic Acid %

poolnewbies5874

Well-known member
Aug 19, 2015
127
SW Ohio
We bought some Klean Strip Green Muriatic Acid at Lowe's. It did not have the acid % listed on the bottle. We came home and looked it up and it is 20% acid....but I do not see that as an option on PoolMath so not sure how much we need to add? Should I just pick the 14.5% and then add about 5% more than what PoolMath says?
 

Pool Tool

Well-known member
May 15, 2014
761
Western Chicago Area, IL
I brought the same product and I ended up returning it because of the "green" in the name. I could not determine what else was in the bottle and didn't want any side effects. I likened it the "splashless, odorless, etc." bleach available, all of which may cause foaming, bubbles, etc. I generally get the regular MA at Menards. I can't remember if Lowe's carried it in the paint department or not.
 

JVTrain

TFP Expert
Feb 3, 2014
5,081
Central Minnesota
From the SDS, there are no other ingredients listed other than hydrochloric acid so there are no detergents in the product. It would be fine to use for lowering pH in a pool.

As far as how much to add, the 20% is not a part of Pool Math. If you use the 14.5%, you want to use LESS than indicated by Pool Math since the acid is stronger than 14.5%. I'd suggest using the 28.3% drop down and recommended volume to see how much pH change it produces and adjust based on observed pH change.
 

Sparkle

Well-known member
Jul 25, 2015
115
Western NC
I use the Jasco Green Muriatic Acid that Lowe's sell around here and it works fine. It is 20%.

In PoolMath, select the 31.45% MA and then multiply the result with 1.5. E.g. if PoolMath tells you to use 8 oz, use 12 oz.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
33,378
Laughlin, NV
By stating <30%, they can have the concentration nearly anything they want. It could easily range from a low of 15% to 25%, and the general public would have no clue.

I only buy the full strength, 31.45%. Have always found it at our Home Depot here in Bullhead City, AZ

Take care.
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
17,381
Tucson, AZ
Some of these manufacturers add cationic or amphoteric surfactants like Tomamine to increase viscosity and reduce surface evaporation thus reducing fume levels. The surfactant is generally harmless and will be broken down in pool water slowly.

Not worth the extra cost IMHO.