Obviously a quiet pump and a sump-less set-up is required, which probably rules out a salt water set-up. A fresh water aquarium w/ eclipse mount on top filters would probably be better, but how to defeat the imaging issue created by a 3-4' long glass/acrylic tank in the middle of the speakers?
In the end, I'm guessing that its fairly impossible, unless I knock a hole in the wall and mount everything on the other side of the wall - which in my condo, happens to be my neighbor's living room...
In the end, I'm guessing that its fairly impossible, unless I knock a hole in the wall and mount everything on the other side of the wall - which in my condo, happens to be my neighbor's living room...