The Evolve has a pump chamber in the back with a lid. It sits on top of that with the tubes dipped on the display side. I tried the other side then realized that the pump keeps the water pulled down about 1/4" - oops. I have one of those water bottle gadgets on another tank so I just mimicked the way you set up the tubes for it.
I'll get a pic, but it will probably be tomorrow night, because I have class tonight, and the tank will be dark when I get home.
I used one of these containers so it really doesn't look bad at all.