On Thu, 27 Jul 2017 20:51:43 -0600, rbowman
wrote:

On 07/27/2017 11:49 AM, Oren wrote:
Sulfamic acid crystals are a milder form of Muriactic acid.

Not really. Sulfamic acid is less aggressive than muriatic
(hydrochloric), as is phosphoric, but they are all different chemicals.

Opps. I wanted to say "milder form of acid". If I used them side by
side to clean a brick, the MA is more aggressive.

Clear as mud :-)