Acon big and fluffy almost swollen.

[Jordan berry]

Is that normal? Usually the center indents. Right now it is bigger...

 

[domination2580]

It's feeder tentacles are out, it wants fed

 

[Kungpaoshizi]

They'll change shape a bit. Only time to really worry is when it's super shrunken or spewing white fibers. (something is wrong with the tank then or them)