What type of fluorescents? Are you referring to power compacts,VHO, ... and how many? I have 4 65W PCs (2x actinic and 2x 10,000k) on my 90gal and I'm able to keep many soft corals like mushrooms, toadstool, kenya trees, xenias, zoas, and so on. I also keep GSP (green star polyps) and some LPS like frogspawn, trumpet corals, and stuff like that. Depending on the lighting needs of the coral you can move them up or down in the tank. You likely won't have success with SPS with fluorescent lighting of any type but most softies and many LPS (likely placed near the top) should do just fine. There's also a book called Marine Invertebrates by Ronald L. Shimek that's really helpful in answering questions on lighting and flow needs of coral along with aggressiveness and so on. I hope that helps a little.
Good Luck!
Justin