From prior experience, I thought purple tangs were fairly docile. I have a massive (grew from about 2 - 5 " in 2 years) mean purple tang. I only feed once or twice a week and it's doesnt' slow that bully down.
ok, i dont mean to be a jerk, but the intention of this thread was to inform all about what I DO WITH MY TANG... so i am gonna tell everyone, with no offense to jimmy whatsoever, as much as i can help it.. DO NOT FEED YOUR TANG LIKE THIS, THIS IS NOT GOOD PRACTICE... tang's NEED so much more nutrition that this... imo, you need to feed much much more, not sure why you dont, but you will only destroy your tang's health in the long run regardless...
sorry jimmy, but i had to say my opinion