Anyone use Home Depot's Muriatic Acid to bring down Alkalinity?

BAUCE · Feb 12, 2020

I just bought the HDX stuff and am now unsure whether or not I should be using this stuff. Anyone using this without any problems?

Sailingeric · Feb 12, 2020

I would not risk it. What is the other 65.5% ??

Uncle99 · Feb 12, 2020

If Alk needs to lower, let it fall on its own, or use frequent water changes.

jim_fitz · Feb 12, 2020

I have used Muriatic acid in the past to reduce alk successfully though went very slowly

this was due to reagent being out of date and alk being off the scale on my hanna checker

BAUCE · Feb 12, 2020

I just bought some tupperware to make my own pure acid following this guide since I dont really want to throw away 2 gallons of acid:

BAUCE · Feb 12, 2020

I'll bump this thread a few times hoping that someone else has been using this stuff with no issues so far since I just mixed up a batch of salt with it yesterday.

Cory · Feb 12, 2020

You can just be prepared for a drop in ph. Youll need to aereate the water.

BAUCE · Feb 12, 2020

Cory said:
You can just be prepared for a drop in ph. Youll need to aereate the water.

you've used HDX acid though? Im aware that it needs time to aerate so I'll wait a few days while the pumps are on.

Cory · Feb 12, 2020

Sublime Corals said:
you've used HDX acid though? Im aware that it needs time to aerate so I'll wait a few days while the pumps are on.

No never in tank. Just to clean pumps.

nezw0001 · Feb 12, 2020

I've used other brands generic muriatic acid ie hardware store in tank before. Just go slow and monitor results. it doesn't take much. be careful handling it.

BAUCE · Feb 13, 2020

nezw0001 said:
I've used other brands generic muriatic acid ie hardware store in tank before. Just go slow and monitor results. it doesn't take much. be careful handling it.

thanks for chiming in!