A year ago I bought a Leather Cabbage Coral and added it my tank. 6 months ago it started to streach. The bottom halve began to fall away from the rest of the coral and several days ago it fell off. All throught this the coral was out, but a dark pink, while the top was light pink. When the frag fell I placed it near the other half and the new half has since turned pink. Should I have done anything differently?