Vinegar, which contains acetic acid ... One common chemical that is often used to help lower a pool's pH is muriatic acid, a diluted form of hydrochloric acid. It's a strong acid that can quickly ...

Muriatic acid diluted in water works wonders for stains ... If you spot stains, the bricks will need a good cleaning. Vinegar is sometimes recommended as a brick cleaning agent.

There’s also a variety of homemade etchants using things like muriatic acid and vinegar. Most of these use peroxide as an oxidizer. There’s lots of information about things like this on the ...