For elegance corals, I always recommend aquacultured ones. I have my CC bullet proof elegance for ~4 years that started of as 1” frag and is now 6-7 inches across
Mine are, although I wouldn’t know if they’re optimal:
Calcium 420
Alkalinity 11
Phosphates .04
Nitrates less than 10
Ph hangs around 8.2
Temp 76 and some change to 79
Salinity is 1.025