Jacques is right about the Red Sea Fan, it will require constant feeding of the correct foods in order to sustain it, if I remember correctly it doesn't require light to grow, only manual feeding, possibly a product like Marine Snow. No idea about the Christmas Tree coral.
Yeah but with fish you just dump the food in the tank and they come looking for it, personally I can't be bothered with target feeding corals, way too much time and effort
Warren - have a look at this. This is what I have:
http://www.reeflex.net/eng/67/774/Rumphella/sp. 01.htm
That's correct Warr - unfortunately they are not AS pretty (colorful) as the red sea fan, but they are still an awesome sight in my tank, as they grow easy, fast and big...
So which one did you buy Warr?
Well look, if you think you can keep up with the manual feeding regime then go for it, remember that lady from Ultimate Reef that posted her tank here with all the different coloured fans and gorgonians etc.? It's definitely doable, you will just have to watch the feeding and what you feed, especially with it being very fine particled food. You have an efficient skimmer that will remove any excess food, hopefully, your clean up crew is sufficient (I hope ). Think about it, at least give it a try with the Red Sea fan, you can't not buy something as pretty as that