Originally Posted by Ximat
anything else you need to know?
The chemistry numbers/water parameters and how the coral was acclimated would help.
My guess other than that is most likely water flow. Generally speaking, most LPS
corals like the flow on the lower side. If flow is too high in a given area, the flow can cause the coral severe stress and the flesh to recede away from the skelaton.
Exsposing this species of coral to air is not a concern for short periods. As long as it was handled properly and no pressure placed on the septa piercing the fleshy polyps, it should not be an issue.