Are you sure its huge, </em>or just huge for your tank? Unless those clowns in the pics are 5" long, it seems to be a pretty average size for an anemone. I say if it aint broke, don't fix it. One large thriving anemone is much better than two dead ones. If he's happy, leave him be.
IMHO needless to say, but thought I'd throw it out there.........
IMHO needless to say, but thought I'd throw it out there.........