meilings aro jus tapped 21", my largest is about 26" now, my original baby aro is now about 20" or 19" and my 4th most recent aro is about 20" as well.
all very fat, very beefy, and very thick i keep them well fed
the tank is deep but its hard to tell from a front picture.
tank is 8'x30"x30" with a 50gal sump. guy i bought it from called it 400, but measurements bring it more to like 365, then the sump pushes it over. whatevers.