That stuff looks suspiciously like ground seed material that you didn't catch on the first filtration.  That stuff can be a real pain to filter out.  That is a big reason why many people do several boils on whole seeds instead of powdering them.  The first manske should look a little like picture 1 below, this stuff is a very crude first manske, much more cleanup will be done on this material.  If the stuff you collected doesn't dissolve in acidic solution (as stated above), and doesn't fluoresce, then it is def not harmine/harmaline.  Doing a harmalan alk extraction is one of those things that really makes a vacuum filtration apparatus required in my opinion.  Can it be done without it, yes, but you will pay with lots of sweat and some tears by the time you've finished, lol.