Tank is not here yet. In build need to install large sump. No way it's going thru with that center brace. How is that held in? Need to remove rear brace to install sump. How do I remove it then reinstall it. How is it held in. Solid oak if that helps. Gotta paint and do other stuff also so I can flip it around. . Pretty handy but nervous. Plantet aquarium stand. Here is pic of back brace. Cant go through top its solid.