I've never seen another one here either. The yellow, roses, and greens with pink tips I have all seem to be doing fine. they are in contact with each other regularly, with no problems.
I always use rubble with the "sandwich method". After a while, it all gets covered in corraline, and doesn't matter. No more plugs for me. Plus, if I want to move the coral, I just snap off the LR rubble piece.
well, it wasn't a mistake I made, so I don't feel bad about that. I made a post-mortem video. Turn your sound on and press play
http://www.reeftools.com/live/imcosmokramer/blog/135/
well, during your waterchanges, you should be siphoning out "junk" as well, so that you have a cleaner tank. This, in the long run, will help with nitrates