problem with plate coral

Ive just purchased a plate coral 6 days ago he ate krill the second day and was doing fine. today he ate and shortly after he inflated in size and his tenticals deflated and he threw it back up and now he seems kinda limp....is this normal...did i overfeed him

 

They inflate, which it's normal, and their tentacales only come out when their hungry.

 

okay thats cool i just wasnt sure ive never had one and wasnt sure what the deal was THANKS

 

I lost a beutiful one.:-[ I read a post on here too late that bubbles can get trapped under them and that's really bad. I checked and sure enough I had air under the plate released it but it was too late. You might just want to check. May not be related at all thought I'd pass it along.

 

checked no bubbles but good point i wouldnt have thought of that thanks Dador