Look at some of the newer compact lighting. You have a small system, just actinic and day lights{flourescents}. in the new compacts will do just fine, scaled down to your thirty gal. then you could have lots of soft leather corals which vary in color, appearance etc, and your clown will undoubtedly choose a finger coral, or colt or spaghetti coral. Be patient and you could get frags of corals and start small, not that I knew anything about that in the setting up of my own tank. Takes experiance. It took my clowns some time to choose one, but eventually after trying them all out, they chose the spaghetti. It closes up at night, yet is large enough they can sleep in-between the wide body of it. My Clarkiis love their spaghetti coral. They live in it, and now spawn on a rock which is right next to it. Say, maybe someone with the knowledge can tell us if all the different clowns choose anemones which are available in their area of the oceans from which they come, or do they go about searching for a specific species, relocating to find it? The Clarkii, in the ocean, prefer the carpet anemone, yet in our teeny micro system they have chosen what benefits their requirements, the spaghetti. Any studies done on that? They do take food to it and of course we watch it float back up, which doesn't always deter them, 'cause often one or the other will catch it and take it back, putting the morsel onto the base of the coral again. Interesting.