I need to build a canopy for my 150 gallon tank. The tank is 72x18. How wide should I make the access door from front to back. Also what type of wood should I make it out of. I plan to paint it black to match the base. Also if you have any suggestions on the height of the canopy as well as any ideas that may help me. I would appreciate it. Also feel free to post pictures of your canopy as well. As I'm sure to get some ideas from you. Thanks in advance.