I have had a condy anemone for a little over a week now, and it has been perfect, stayed right where i placed it in the tank and planted its foot in my rock. Lastnight it was open and acting normal, now this morning i did a water change, and it still hasn't come out its shrunk up almost like it's deflated maybe, ammonia is not on the rise, and all the other members of the tank are acting normal....do anemone's do this?