I have removed the black card from the back of the tank, personally i think it looks loads better??lol We have beige wall paper behind the tank, i'm not sure it's picked up by the pics. There are a few wires, but i am gonna hide them if the back stays off.
Wow Ian, just Wow. Only thing you get more of when you remove the backing is the relfesction of the plants along the glass, due to the angles to glass is at.
Tank is looking amazing though, and i think it looks better without the backing also.