First off, I got rid of my Vision cages b/c I just didn't like them. I bought a bunch of those suction cup hanging plants and when I got home relized that they wouldn't stick to the plastic. What I did was I slid the suction cups off and drilled a small hole in the wall of the cage close to the top. Then I slid the long plain part that the suction cup was on threw the hole. It don't look all that good on the out side on the cage but its cool looking inside the tank.
Heres a few pics of my RTB's cage.