i have these brown button polyps which have elongated stalks and kinda big polyps. there are brown with a sort of an orange center. look really nice, but yesterday and today theyve been looking shrunken and frazzeled up and alot darker than normal. i use 72w PC over a 10 gallon tank. ive had these for 3 wks. anybody have this happen to them, let me know what you found out. thanks.