Two of the photo's below show the canopy with inner frame, side panel assembles, top outer frame and bottom outer frame after they were glued. The top outer frame bottom outer frame and side panel can be removed from the inner frame assembly if needed. The other two photo's are of the top outer frame and lid stained ready to install on the inner frame and side panels.
The last major parts of the canopy are in the photo's below. The top lid is used for access to the LED's and electronics in the canopy. No access to the tank through the lid. The top outer frame holds the top of the side panels and the top lid is mounted to this frame. This frame is attached to the inner frame. The bottom frame assembly is attached to the bottom of the side panels and is also used to hold the bottom of the side panels against the inner frame.
Photo's of the finished inner frame assembly are below. It just needs final painting. The pocket holes in the shape of a V are for mounting the side panels to the frame.
The parameters I have to meet is that no wire or plumbing can be seen hanging off the back or otherwise. The water level at top of tank cannot be seen and the side of the gravel or sand bed cannot be seen. This was set down by the other half. I had to get an OK for the wires and cables to the wall plates. This included 5 tubes from a wall plate to the tank. I am glad I got a signoff on that otherwise this would not be possible. So this design is to keep as much as possible hidden from view. Now ...