question regarding tangs and tank size

[The Grizz]

Well being in the 8'er club I can say that my lg Sohal tang does do the whole length of my tank from time to time but most if not all of my other tangs really don't. I think a 6' tank is good for most tangs until they get up to 6-8" in body length not including there tail. If you place your rock so that they have lots of room to swim with some hideouts for the ones who like to go into areas like hideouts at night.

My current tangs are Sohal, Sailfin, Luitenent, Purple, Scopas, Orange Shoulder, Yellow & 2 Regals. once my 300 8'er is done there will be an Achillies added.

[Reef Pilot]

I have a good sized yellow tang in my 6 ft 100g. Most of his time is spent picking on the rocks and back glass for algae and occasionally taking a lunge at my butterfly fish, just to remind them who is boss. But sometimes he makes quick short dashes around the tank, which is usually when he is pooping....