I just got a 180 and I see a good many people on here with silver/black aros in 180s. I would really like to get one (pref a black because to my knowledge and from the stickies, they tend to stay a little smaller than silvers). Is a 6x2 footprint enough for an aro for long term? Or at least a few years? I know everyone says that they will upgrade to a larger tank, and my plans are to build a plywood some day, but that's just plans now. What do you think? Would you? Or how many of you keep aro's in a 6x2?