toadstool are a very hardy, very diverse coral and a great one to begin with. they will acclimate to just about any type fo lightig from vho's to pc's to metal halides. they get the majority if not all of their energy form their zooxanthellae, but do like to have optimal water quality. i have had one in my 20 for about 10 months now and he was one of the first corals that was in. great little guys that look very cool!
good luck
jon