So the last few weeks at the LFS I have been eyeing a fist sized piece of green star polyps and a nice pulsing xenia frag. I decided to pick up both items. Took them home and acclimated them and inserted them into the tank. The xenia has not pulsed and is now 'melting' away. The green star polyps have not come out since buying them. They have both been in the tank for a week now. This is the second GSP piece I have had that has done this. It says care level is easy yet I cant seem to keep them?? Any ideas? What details do you need? 