kaneryles,
I see that you just registered in Oct. 2007. Is that you just started this hobby or that is just registered on RC? Reason why I asked, I don't recommend anyone trying an anemone until they have a year of experience under their belt.
As for the nano part, yes, anemones can be kept in them but only selected few. If you don't have a lot of experience under your belt I would definitely wait 6 months. If you are downgrading from existing system then that can be quickly done under high experience.
Celano,
Theres anyways exceptions to the rule, so i would be inclined to make a blanket statement. Even Though, I agree with you that BTAs are one of the most hardy anemones.