I fed my tangs in my 135g(yellow,naso,kole,purple) Algae strips everyday (when it was gone, I reffiled it and had one clip on each side of the tank), I fed lettuce, brine, mysis, formula 1 and 2 flake, pellet, etc. They all ate great, little to NO aggression, and were fatties. My yellow tang went from a little bit bigger than a golf ball size to about softball size in less than 6 months. I also put in calurpa twice a week.
Adam