Trouble in Star Polyp land

[doch]

So... My star polyps aren't looking so hot. Everything else in the tank is doing well, or seems to be at least., except for the last few days my stars haven't been coming out at all. Correct me if I'm wrong, but they are able to adapt to nearly any flow and light are they not? My frogspawn, finger leather, fuzzy mush, zooz, and xenia... all seem to be doing great... it's just the hardest one to kill that doesn't look so hot.... any ideas?