[schriss]

It's an old thread, but just to add as it might help someone:
My Acans bailed in main display tank most likely because of Alk drop OR some red slime getting very close to the heads.
I moved them all to quarantine tank which had perfect water just made from a salt bucket and they immediately puffed up and seem happy.
Detached head I have put it on a clean rock and put netting over it to keep it there. It puffs up, tentacles are out through the netting and it has been like this for 5 weeks now.