Here's my bullet proof elegance from cherry corals, almost 2 years old. Your params are very close to mine but I feed mine all the time. Reef roids, mysis, brine, krill, rods, lrs, oyster feast, broadcasting live phyto, etc. I might have missed it but are you feeding him? It might just be wild or maricultured elegances that aren't as adaptive as Aquacultured?