I'm sorry to hear that. FWIW, when I added a rabbit and an urchin to my cube, it was a big green hairy mess as I had given up on trying to fix my nitrates at that point. They didn't do much for a few weeks, but all of a sudden I saw both just going at the stuff on the glass. Sooo .. I dunno. Maybe yours will still come around? Hang in there, there's a solution, one way or the other (even if that solution is starting over in a new tank.
) Good luck!