Rob, you're right....for a little office tank, think cheap and DIY. Look to see if you have any local reef clubs and join up. Get to know the people....you'd be amazed at how many times an aquarium will change hands. I got this from a buddy in a forum, and much of the rock as well. As for fish.....well, it's an office tank. Which means it's going to be ignored for two days every week. You'll want cheap, hardy fish that can put up with a little more system fluctuation than your standard reef tank. You see the fish I have here -- I spent 8 bucks on the firefish, 6 for the clown goby, and my "big expenditure" for fish was a $20 Rainfords....and that was only because I didn't want to wait for when they go on sale in my area.