I have a RBTA that has decided that it wants to be on the same rock as several of my other corals. Some of them are dying off after the nem comes to them. I have a neon leather though that I really don't want to lose. Should I just move the nem? Will it just move back. Should I try to move the corals that I want to keep since it seems the nem likes that rock? I've been holding off on writing this but it's been 3 or 4 days now.