shrooms and xenia are pretty easy to. Also you might consider some of the other softies like a Kenya tree it will grow pretty good and is a hardy critter. On a side note is that a Alcyonium species coral ," front of tank on the sand bed? " They are really hard to keep alive if so they need lots and lots of food and really good water movement/quality. Most of them starve to death in reefs.
Hope I'm wrong about that last part
Chris