They are very difficult to keep, but if you have a very dimly-lit tank and excellent water quality, you may be ok. I would only suggest you try them if you have a pretty good amount of experience keeping corals. I aquired a rather large one and put it in a corner of my tank and stacked rock around it to make a cave. It didn't do very well at first, splitting itself into two med. sized branches, but once it settled in, the two branches are now doing fairly well. I would suggest a low-light-only tank in a dark room, low-light species such as the carnation, black sun polyps, and such.