Brain coral question

[Daylilly]

Why is my brain coral so puffy
It was like this when the lunar lights when on. I have given it a piece of scallop when the lights all went out and he is still so puffy the food is slowly going in though..
Does it take so long for them to eat... I have to guard it from the peppermint shrimp

 

[Kurt_Nelson]

That's just what they look like when they're eating. Next time, try chopping the scallop into tiny bits. Not only will it be quicker in eating it, it will get more nutrition out of it. Even though they'll eat big hunks of food, often times they'll spit them back out hours later if it's too big to deal with.