I have a candy cane coral frag with two heads and a third forming. Can someone axplain what happens when these begin to die off. The heads seem to look ok with some tentacles coming out but the flesh part only goes a little bit down behind the heads then bare hard calcium looking coral starts. Is this normal or should there be flesh all the way down to the rock it's attached to? I am running a 120 tall with 4 t-5s I have this pice placed about midway with medium flow. Any input would be awesome, thanks Jerry.