I decided to upgrade my nano to one step up. I had a few requirements: 1. Not too big. 42 x 24 X 20 2. Had to blend into existing house and furniture. Where possible use existing items vs buy new and have it accepted by wife 3. Have the system set up to be as low maintenance and automated as possible! Wife will not deal with tank related issues when I'm out of town on business! So this is my story of the tank build up in San Francisco, Bay Area! ...