I went from a 6 to a 12 to a 55 to 2 55's and now I have a 90 and a 56. the 56 is about to go bye-bye (I need the space) but I am aslo thinking about going from a 90 or a 180. All it takes is money and time.
Bigger tank = more money for water, salt, pumps, power heads...' yea dont forget fish...