I have to disagree with Beth, this is very do-able. My lfs has at least 4 tanks that are 10 gallon or smaller. Each of these has a bio-wheel, powerhead, and a heater, the guy says he changes the water once a month that's it.
I have a 7 gallon bow that is thriving right now. I've done some modifications from the kit. I added a penguin 550 ph, I removed the hood and have my old hood with two 18 inch lights on top for better color (an actinic and 10,000k).
I have 15 lbs of marshall is. lr, 2 inches of ls, some star polups a ton of orange sponge growing on the lr. I have a cleaner shrimp, a catalina goby, a percula, some snails and some blue legs.
I change the water about every 2-3 weeks. This tank takes a lot of attention but it is easy.
This is definatly a setup and forget about tank, but water changes take just a few minutes and require only a couple of cups to remove. Big trick is not to over-feed.