i'd say if u can afford... go 4 an 8 feet... best length for show casing an aro in a tank in a home... my fren's got a beautiful set-up... if i manage 2 get some pics when i meet him up i'll post it up...
I have just moved from a 5x2x2 to a 7x2x2, and I have to say that I think the 7x2x2 is the smallest I would recommend. It just allows the fish a lot more space to swim, and can house it for life.
