sorry to say the prazi doesn't seem to work. I pulled out a few molt shells yesterday and they still have "the bugs" in them. One or two golden bee that have the short antennae are still being quiet. I dunno, maybe I just need to do the second followup dose, or a full dose instead? Also saw a Mark's shrimp tanks video short of a shell that's even more loaded with "the bugs" than mine, although he didn't say whether it was a caridina or neo shrimp. Well maybe these bugs are "normal" after all and the problem is somewhere else, sigh.