OK, one more question for some feedback and I'm done....promise
I'm trying to come up with a nice looking way to keep the door closed on these tanks. I have seen the way they are normally held closed with a small piece of acrylic attached to the tank that rotates over the door. But I have a couple more options for you. The snap is fairly straight forward. I would use two of them, one on top and one on the bottom and the door would "snap" shut. The other is the hasp, which is also clear, but you could lock it if need be. Also, I plan on putting a small, clear pull on the door as well so it is easily opened.
Here is the snap type:
Here is the hasp (measures 2 3/16" x 1 1/16"):
Here is the snap type:

Here is the hasp (measures 2 3/16" x 1 1/16"):
