I keep all my BTA's (both rose and green) under PC's and they are doing great. BTAs are one of the more hardy anenomes (short of condy's) that seems to have a better chance surviving in the home aquarium. I originally had them under metal halides, but they seemed to stay small and hide from the light. Under the PC, they expand quite a bit more and have started splitting regularly. Most all of the other species of anenomes however generally require metal halides to stand a chance, or at minimum a strong T-5 setup...
Check this website:
http://www.karensroseanemones.com/ - Some great info regarding BTAs...