Inflated brain

[magikof7]

Hey all!

I am still learning the many moods of my Corals but This brain is extremely moody. Some days I think Oh boy he is dying, (all shrivelled up with his mouth gaping) only to turn around and he is back to normal and today He is the most inflated I have ever seen him
Is this normal or is there something going on? ...."What does it mean"!? lol

Here are a couple pics. I know it looks a bit crowded on the sand. I just picked up the Hulk acan and a few of the Zoas yesterday from Concept. They will be put in their places today.