I'm going to start to build some wood racks for my 29 gallon tanks. I want something that is easy but still looks good. So I decided on using Ted's design with half lap joints but I'm going to use dimensional red cedar. Also I'm improving on the design a little bit by notching out the horizontal front and rear lengths one inch and the side lengths half way to fit into the front pieces. So the sides will be 12.5 inches with a 1.75" notched out on each end 1.0" in on each end. That will drop into the 1.0" notch on the horizontal lengths leaving 0.5" to drive through. All put together with 3.0" lag screws. On top of that there will be 2.0" heavy duty corner braces to additional rigidity. I also plan on building the same frame 48 inches long with an additional rear center leg and frame support this winter. The idea is of course that all the racks look the same in my basement. Pics on Sunday!