That is a sweet tank. I have a suggestion though... Try placing sandblasted window film as the background to the tank. You should be able to get it at a building supply store. It basically looks like frosted glass and acts like it, but is nothing more than a vinyl sticker. It'll still let light in from the back, but make the back of the tank look like it has a white background, this way the room that's viewable in the back won't distract the viewer from the tank.
Does any of that make sense to you? If it doesn't, I'll try to get some pics up of what I'm talking about.