about once every week it looses the bubble like tip and then they eventualy grow back and loose them over this piece slowly shrank after purple coraline engulfed but i also wasnt feeding dt's at the time since then all coralsare doing great but still have this in tank but is covered with coraline
too bad your not out here in SLO. One of the LFS had about 2 of them a month ago(i havent been back since). maybe you could call them and see if they'll ship.