I would not worry at this time. I'll tell you what happened to me. When I decided to switch to a dsb, I removed my corals and LR. I discovered a colony of green button polys that had fallen down behind the rock that I had not noticed missing. They must have been behind the rock for over a year. They looked terrible. They were shriveled up and white as snow. When I got the DSB in and put the LR and coral back in, I placed this colony of button polys in a place with good lighting. In about two weeks they got their color back, opened up and now are one of the best looking colonies that I have.