No. Not at all. Like I said I couldn't get the Flameback out of the rock. I started pouring pitchers of water on the coral and that's when he finally came out. Coral can go quite a while out of water. A friend of mine at the zoo drains 1/3rd of the water in their coral tank and a lot of it is exposed for a while.I have the same tank and about the same amount of corals…did it hurt your corals being exposed like that for that long ?