Beautiful tank - I absolutely love your toadstool. I have the same one.. Can I ask you a question though? How have you kept those star polyps underneath it so localized? It looks like you have them in your rock work and I would expect them to start taking over.
I have a 30G sump running.
Seaclone protein skimmer
T5 lighting 216 watts
I have no filter media, I just have 70lbs of liverock, 60 pounds of livesand in my tank. Live sand, live rock, and micro algae in my sump. I have been pretty successful with all of my corals. I dose the tank with calcium, iodine, and strontium and molybdenum.