Thanks for your thoughts. The top is probably going to be Corian or Silestone rather than real granite. It will still weigh in a little over 100lbs. Thats nothing compared to the weight of the stand or the aquarium. You will be able to see the edge and about a 1" wide band around the top.
I understand that glass aquariums don't need support in the middle. I am planning for the future, when I may decide to get rid of the aquarium. If I do, I'll still be left with a quality piece of furniture with a nice top. Saving money was not a primary concern here, although this will be much cheaper than buying a comparable quality piece of furniture.
Those drawings were done in DeltaCad. It is a low-cost, basic CAD program. The more I use it, the more I like it.
I know I don't need the top. My wife and I just like the way it will look.
Thanks for showing your stand. It looks very nice and I bet it was built very well. When I was in college, I built two stands using oak veneer plywood for the back and sides. That is another cost-saving option for the more dollar-conscious Aquarist.
This will be my 6th large woodworking project. I like to keep challenging myself, so I chose this more complex design. Woodworking is a hobby I also enjoy, so this is a labor of love.