I have an Aussie elegance in my 14 gallon Biocube.
Picked it up yesterday, after my LFS had been holding on to it for me for over a month until I got ready for it.
I've heard that elegance's don't do well in captivity, but I've also heard that this is particularly true of the elegance corals that come from the Indo Pacific. They don't seem to be as hardy as the ones that come from Australia. The LFS where I got my elegance has one in their 8 gallon Biocube as their only coral and it's been there for well over a year and I've always thought that it looked absolutely gorgeous. I told them that I wanted one just like theirs, which was pink with pink tips. The one they got in for me is actually pink with purple tips. I asked them what they fed it, etc.. They feed Phyto Feast and Roti Feast, so I picked those up, as well as some Arcti Pods for my fish. I've been doing a lot of reading on elegance corals as well as visiting another "central" board and PM'ing people who have had theirs for over a year, so I'm giving this one a try. Going to do small daily feedings and I always stay on top of my weekly water changes, so we'll see how it goes.
If it looks like it is not thriving in my tank, then I will take it back to the LFS and they know this. They've had theirs in an 8 gallon Biocube with stock lighting and it's thriving, so I'm hoping for the same luck.
Do a search for elegance corals on this message board. You will see a recent thread where some members had theirs under MH lighting and it almost killed them. They moved it to PC's and they're doing well.
PM New2Salt1 or Veni Vidi Vici.
ETA: Here's that thread:
https://forums.saltwaterfish.com/t/313765/elegance-thread-post-your-pics