MorganAtlanta;666625 wrote: Here's how I would build it...
Make the canopy to fit around the outside of the tank. Leave at least 1/4" of play so it goes on easily. Leave the back open. Put 1x4 strips (or 1x2 or 1x3) around the inside of the base of the canopy, leaving some overlap of the sides of the canopy on the tank to hide the rim. The canopy will rest on the rim of the tank on the 1x4, and the light fixture should slide in and rest on the top of the 1x4 inside the canopy. If the back of the canopy is open, you can slide the light back to get into the tank, and you can slide it out forward easily if you really want to get in there.
Rig a plug/powerstrip in the top inside of the canopy so you don't have to fish the cord around if you want to slide the light out. You can use the same outlets for powerheads and such as well. You might want fan or two in the top or sides of the canopy since it will trap heat. Use a computer case fan. Have it blow into the canopy. If the back is open, the air can flow out there. Get a fairly big fan (like 100mm), so you can run it at low voltage (like 6v instead of 12v) and still get good air movement.
Hinge the top across the middle with a piano hinge. Attach the back part of the top to the sides, and attach the front of the canopy just to the front part of the top, not the sides. Think of where you want to place your fans before you put in the hinge. Put the hinge just forward of the fans if you put them in the top. You'll probably need a strip of 1x2 along the inside top sides to stabilze the joint between the top and the sides and to make the top/front sit right when it closes.
You can use solid wood for the sides, but I'd use plywood for the top and front. It won't warp like solid wood. If you use solid wood for the sides, you don't need to show any plywood edge on the outside, so you can stain it and it will look nice. If your dad builds furniture though, he may have some edge veneer, in which case, I'd do the whole thing with plywood.