So i got a frag of this nice acan from a local for free, the catch was that it was in a losing fight with a birdsnest, killing off about 2 1/2 heads on the frag. There is just bare skeleton where these heads used to be now. The remaining 3 1/2 heads of the frag acclimated well to my tank and seems very happy in its new home so far. What I am curious about is whether I should strip away the pieces of skeleton that are left on the frag, or will the live tissue use this old skeleton to graft onto as it grows? I have the tools needed to break away the dead parts without causing harm to the good parts, just not sure if it is necessary to do so.