I have recently rescued a orange sun polyp from the LFS, approx. half of the coral has deteriorated white skeleton with bits of orange tissue, (no polyps) and half have sunken polyps, and I can see yellow down in the centers of the tube, but they are far from expanding to the top. It is possible to rescue this poor thing? any advise is greatly appreciated. I am have a mature reef of 4 years with no problems. Thanks everyone