Sean, you did a really excellent job covering the overflow box with the BG. I like the draw of water from the bottom too. Should move the water behind the BG and yup, like the ray
My situation a little easier I think since I have the built-in overflow with the acrylic bracing covering the area around the top of the overflow. I should be able to cut my height and then cut the area around the toothed edge of the overflow.
Really like your tank. No fish yet.