Looks like it.

I may be jumping the gun here, but fumaric is kicking ass with super fast xtalization, very shiny transparent xtals, and no signs of sticking to the wall at all . Meanwhile the other jars have the clouds still hanging around and benzoic hasn't changed much.

Originally I didn't focus on fumaric cause it is not as soluble as citric in EA and I wanted the biggest process window possible to be robust. But if xtalization is better I may switch to it.

Product from a different acid will need lab analysis, it may be selective to different alkaloids (e.g. precipitate something new that citric doesn't).