They are a high maintnance coral. They require feeding of each polyp and also carefull placment in the tank. Rember when you have to feed your tank daily you have to keep an eye on your water conditions in your tank. Oh yeah, they do not mind being hung upside down in a cave. They are cool corals but due to their demanding needs they are more for the experienced hobbyists. But hey, they are worth a try..
I see these all the time diving in the gulf of mexico. I plan to get one next summer (hand picked). They are always in dark places and they do not require any sunlight.