I currently have a 48x48x20 cube tank with overflow in the middle , so the tank is view able all 4 sides . Almost identical to the tank in the link , mine is just a bit bigger and I have euro bracing . Have no complaints about the tank . Well besides it takes a while to clean lol. Love 20 high , also think the cube with internal overflow gives you some cool ways to aquascape . You can really make nice deep caves , instead of focusing on a straighter line and stacking like in a traditional style tank . But I guess this style is good if you have a place to hang lights . I have a pipe in the overflow that I run all my cords down to make it look wireless. Really clean set up . Just a little bit of insight from owning a cube tank good luck with the build
http://www.captivereefs.com/forum/na.../#.U_f55PldUYE