On what dark said, i think with MH lighting you don't need to feed your BTA at all. Especially with clowns throwing food their way. I feed mine because it is fun to watch, but not necessary when you have good lights.
As for the LFS - "PC lighting is the way to go with anemones, 2.5 watts per gallon, I would be happy if i was an anemone with that" - really? really!?
Although i agree sometimes LFS give advise to produce a sale, i think everything shoudl be taken with a grain of salt. ALthough the old saying (on this site) of "we aren't selling you anything so you should listen to us instead of a store trying to make a sale." While i agree with a part of that, a lot of people on this site have nothing to lose. I would say 80% of the advice is good, some of it is not that great. While we don't have anything to gain for giving advise, we also have nothing to lose. So what if i tell dark that he should feed his anemone copper tablets and florecent lighting, what do i have to lose? Nothing. While a store has their business credibility on the line when giving advise. So while some of it may be bending some truth to make a sale, i would say the majority of it is advise that the LFS truely thinks is good (doesn't mean it is good advise).
You also have to realize it is a business, and it isn't economically feasable as a LFS to put one tang in their own 75 gallon tank, with 80 lbs of LR, ect. YOu get the idea. Because ideally they will sell that product within week or two.
Sorry for the rant, i just think that sometimes LFS get a bad rap because they are a business, and the belief that they have EVERYTHING to gain from giving you crap advise is not accurate (although sometimes it is). Then again sometimes businesses don't care about their reputation and image.
Just my 2...