Hmm...14g with a
BTA. I can tell you it's not recommended.I have a Rose
BTA in a 24g.An established,stable 24g.It was suggested the larger the tank,the better.
My ocellaris in my 55g won't go near an anemone,or at least haven't yet.
My Tomato clown took to an anemone in 1 day,but they get way to big for a 14g.
Tank raised or not seems to make no difference,since all my clowns are tank raised.
I'm afraid the deck is stacked against ya on this venture.Maybe someone,somewhere, had made it happen.I just know I wouldn't try it.
Best of luck with your new tank!
Larry.