this has been covered numerous times even since I joined and that wasn't very long ago, but a 180 (6x2) should last quite a long time, but they will probably eventually need something longer and wider, maybe even taller IMO
I'm planning to get a Jar as soon as the Tank compeletes the Cylce process but I only have a 60Gal. How big does a Jar have to be before moving to a bigger (and permanent) Tank?