We have a 20, 35, and 2 x 55 gallon tanks. Today we took the plunge and put a 6 foot, 125 gallon tank with stand on layaway. It will be our last tank.
It'll take a couple of months for me to pay off the tank, stand, heaters, filter, etc which gives me plenty of time to figure out what kind of substrate I want, whether or not I am finally going to try live plants, and what kind of fish to keep. Actually, i'm not even sure what kind of filter to get yet.
Our current tanks are very colorful and artificial looking (think Vegas, tacky but entertaining) as you can see in these pictures:
I'm thinking I would like the new tank to look more natural. We're going to use it as a room divider in our basement so it will be visible from both sides of the tank, we won't be using a background. So far I'm leaning toward some Balas, Barbs, and Loaches, if the tank is big enough.
Can't wait to get the sucker home and set up! Going to be a long couple of months. My 3 year wedding anniversary is July 18 and I'm hoping to have it then, as this is my anniversary gift.