I recently purchased a possible acan 'frag'. It's about the size of an acorn or slightly smaller. The problem is there are polyps all around it, it's not attached to a rock or anything, the entire piece is the coral, so no matter where or how I place it, some polyps will be on the bottom and unable to receive light.
Do these corals 'distribute' the 'energy' provided by the zooxanthellae to compensate the light-deprived parts or is each polyp on 'its own' in that aspect?
I placed it in a live rock cranny where it fits very well, however I am concerned about the coral polyps on the bottom and sides (which aren't receiving much if any light and can't extend their feeding tentacles at night):