I can tell that I have two of them and they are hard to get started on your tank, but once they set, they are pretty hardy. Meaning that you have to take your time acclimating them. In my opinion, over two hours. A very slow acclimation. The first one I got was from Bluezooaquatics and they are the ones that recommended a very slow acclimation process. That was 8 months ago and mine is still very healthy and growing new polyps.
Here is what I have learned from mine so far:
"¢ They don't like a super clean water environment
"¢ Every month or so, blow them with a turkey baster or something along those lines (Not too strong, just enough to get some of the accumulated crap on them)
"¢ You don't need to spot feed them, but it helps. I feed mine about once a month and they have grown about an inch since I got it.
"¢ From what I have read online, most people can't keep them alive past a year. In my humble opinion, I think this is because detritus accumulates on them and they rot.
"¢ Mine prefer the sand bed, but they don't like touching the sand. Therefore, I have them on a small almost flat rock and they are happy.
Best wishes with yours and I hope yours makes it and lasts a very long time. I love these and their cousins the Alveopora.
Here is one of mine and the Alveopora I have:
Goniopora(The lighter green area up front is new growth. It normally opens a bit later than everything else):
Alveopora: