Ideas for a low light marine aquarium

[BCOrchidGuy]

So where I'm at right now is, maybe instead of using all my rock etc and making a cichlid tank I'll make a low light tank.

I'm thinking a 24 inch Marine Glow fluorescent tube on my 54 Gall corner and I'll keep sponges, sun polyps, maybe sea pens, carnation corals and a few feather dusters. For fish I'm thinking a pair of Clarkii clowns or another pair of clowns along with a goby or two and a pistol shrimp. Some cleaner shrimp etc to round it all off.
Anyone have any other idea's on stuff I can keep in a set up like this mainly along the lines of corals etc? I figure I should see some interesting and nice coraline growth in there.

Doug