Fish people, couple questions.........

Im trying to figure out a way that I can get a 55 gallon tank and use it to divide the living room and dining room. What filters and air pumps can I use to have a freestanding tank that doesnt have any visable tubes or filters or air lines? Is it possible to use 2 eclipse 12"x24" hoods since they have the filter and light built in to the lid? Do those hoods have an air pump built in to it too?

Maybe use an undergravel filter, so that the only thing visible is the air line? Then route the air line, and power cords for the heater and hood lights real neatly?

http://images.google.com/imgres?imgurl=http://www.arcatapet.com/fullsize/1634.jpg&imgrefurl=http://www.arcatapet.com/item.cfm%3Fcat%3D1634&h=400&w=400&sz=32&hl=en&start=1&um=1&tbnid=O_1R2B0M5wuTIM:&tbnh=124&tbnw=124&prev=/images%3Fq%3D55%2Bgallon%2Bundergravel%2Bfilter%26svnum%3D10%26um%3D1%26hl%3Den

Not totally sure about the complete hoods.

I had a 55G setup separating 2 rooms, but I had walls at each end and the tank fit perfectly with 2 of the small bio-wheel filters hung on the ends instead of back/front. Had custom glass cut at lowes for the tops, and just ran the wires/tubes down the sides of the tank into the stand.