Carnation corals are a NO light species. They rely solely on what's in the water column. Definitely not for a small tank or a new tank. IMO
, not for any tank.
The only way to keep that alive would be to have a phytoplankton drip, and constantly add it to your tank. This would be impossible though, because it would foul your water very quickly.
I once saw a coral called a "blue pineapple soft coral" on a stock list and decided to order it. What came in was a tunicate- Not a coral at all and not easy to keep happy either. If I was a LFS
, trying to make my bills, what would I do? Not sell it? Tell folks this thing probably won't make it and you shouldn't buy it?
Most stores will label it as a "pineapple soft coral" and sell it. Maybe even a "christmas tree".
All that said, is that that kenya tree looking thing you asked about in other threads? If so, you have something seriously wrong with your water. Those are not easy to kill and if it's dying, I'd be doing some water changes.
Is there any flow in that tank?