I don't have a tank at the moment, sold my 120 long a few months back but am thinking of getting a 29gallob bio cube or something similar. Im having the itch and regretting selling in the first place. But with 2 boys, and gonna e moving this coming summer I chose to sell, now I gotta say my life is easier not having to worry about a big tank and that's whys im gonna start smaller, until i have the time and dedication needed to run a bigger tank. Eventually id like to get a 220 or bigger, a nice 10ft by 2.5ft tank built in wall, once we move.