I took the top off my Canopy, cut a little bit off of the sides of a 2 x 4, then ripped it down the middle, sanded the Top of the Canopy inside, to bare wood, glued, clamp and screw the squared up boards to the top left and right insides, for rigidity. The Canopy and Aquarium is tall enough that you can’t see into the canopy when the front is attacked with the magnets. Leaves a nice Ripple affect above.