On 08/03/2015 09:07 AM, Muggles wrote:
Thanks for all the advice from everyone on how to use this muriatic acid
stuff. I was a bit cautious about using acid because I'd never used it
before, but with everyone's advice it encouraged me to go ahead and give
it a try.

A lot of the toilet bowl cleaners are hydrochloric acid. Same stuff.
Same stuff as is in your stomach, come to think of it.

Phosphoric acid will work too and is less aggressive. Coca-Cola's
rumored ability to remove rust is probably from the phosphoric acid in
it. It's a very low concentration but there have been some studies
linking it to osteoporosis.