Too much muriatic acid?

[Pamelastromley]

Hi all,
I'm looking for advice. 18ft x 48" round, vinyl pool. Filled with well water, added one bottle metal out. Waited 24 hrs, tested TA using Taylor 2006c, result 240. Added 1 gallon muriatic acid. Waited 48hrs, repeat test reads 240.. added another gallon. Waited another 24hrs, and test still reads 240. Is there a such thing as "too much muriatic acid".. especially for such a small pool? Do I really add more, or how long do I wait to retest? pH reads 7.6

Thanks all.. any and all advice appreciated!
Pam

 

[mknauss]

What strength is the acid?

 

[Pamelastromley]

20%

 

[mknauss]

20%

Odd %. Not normally sold at that concentration.

 

[mknauss]

Even 14.5% would lower your TA by over 30 ppm per gallon.

Stop adding acid and confirm your testing methods.

 

[Newdude]

20%

Got a pic of the label ingredients?

Sure it's not 20 Baume / 31.45% ?

 

[Pamelastromley]

Got a pic of the label ingredients?

Sure it's not 20 Baume / 31.45% ?

Not at the moment- out to dinner!

 

[Pamelastromley]

Even 14.5% would lower your TA by over 30 ppm per gallon.

Stop adding acid and confirm

Not at the moment- out to dinner!

The sds reads 10-30%, exact percentage kept as a trade secret. It's the Kleen Strip green from Lowes.

 

[mknauss]

Ahh -- so no idea. Regardless, even at the low %, you have added enough acid to severely lower your pH in the short term.

Let things circulate for a day and check TA again.

 

[Newdude]

The sds reads 10-30%

Yeah. If it was 30% they'd be bragging about it and hiding it if it was watered down 10% IMO.

The easiest way to make the no/low fumes kind is to dilute it.

 

[Pamelastromley]

Yeah. If it was 30% they'd be bragging about it and hiding it if it was watered down 10% IMO.

The easiest way to make the no/low fumes kind is to dilute it.

My thoughts too. It's what was available at the time I was at the stores. I'll be on the lookout for the non- green variety.

 

[Newdude]

Ace Hardware has it for $9.99. The weak stuff is $11 to $14 at HD/Lowes.