As PoolGuyNJ mentioned, Acid Magic doesn't fume to the degree that plain ol' muriatic acid does and this may be an attractive thing for you. The problem with Acid Magic is that we don't really know what else is in there. According to the MSDS, it is mostly hydrochloric acid. We just don't know what else has been added to it and despite our asking, Certrol will not divulge the complete formulation to us citing "trade secret". Because of this, we really cannot endorse Acid Magic as being a suitable alternative to regular MA. If we knew what was in there, completely and totally, that might be different. But as it stands now, we just don't.