I just wanted to drop in and give some thanks to hydrophyte for coming up with a really cool idea for a stand, and for sharing it with the rest of us. After seeing your idea, I knew I wanted something based off it for my aquarium stand.
Right now I just have a small 12 gallon Fluval Edge, but I my plan is to slowly piece together a 29 gallon rimless tank. I thought it would be cool if I could design it to handle my Edge for now, and then the 29 when I'm ready. I also wanted to be able to hide my stuff since I plan on running CO2 and need a place to put my test kits, fish food, ferts, and the rest of the crap that I've accumulated.
Here is what I came up with after many hours in sketchup for what I want in the end with the 29 gallon rimless. It's 25" tall, 32" long, and 14" deep (there will be a 1" lip with the 29 gallon):
In the mean time, all I had to do to adapt it for the edge was add a top, which was all of $9 worth of 1x3 cedar. Here is how it will will look with my Edge until I get the rest put together:
This is my progress as of tonight. The stain is Minwax Red Chestnut, and I painted the brackets black. I am planning on painting the screws black as well, although they look kind of cool, so now I'm not 100% on that. Here is a pic of it without the top, so you can see how I reinforced under it. With the Edge, the weight won't be supported the outside edges, so I needed more support underneath the top.
As for the top, it's simply 6 1x3's glued together such that it overlaps the stand by 1" on the sides and front:
Put together, it looks like this:
What I have left at this point is just to cut the lower shelf and finish it, and then to build the doors and sides. I haven't started that yet because I wanted to get the frame together first so I could get more precise measurements. Google sketchup worked great for building it virtuall first and making my actual material list, but for the tighter tolerances I wanted it in front of me first.
So far I love it!