I have not completed the top bracing yet. I think I am going to run a single aluminum brace in the center from front to back and then cover the entire top with another sheet of plywood and cut out openings for the lights and tank excess. The aluminum was an afterthought, I was going with just the wood but then decided if I ever wanted to remove the wood to get into the tank to add or remove something, I didn't want to lose all of the support if the tank was full of water. As far as installing glass and pond coating over it, I have heard that pond coat does not adhear well to glass underwater. I am going to build a smaller tank to test sealing the glass with pond coat and see what happens. My pump and filter sock assemblies as supposed to be here tomorrow so I should get the sump about finished by Thursday. I will post more pictures then. I did stick a piece of glass to a board with pond coat, cant get the glass off without breaking it. Same holds true for acrylic, and a hunk of wood I glued to the board.
