Well the 24" deep tank may stick out 6" over the window but it wouldn't be as wide so you could keep the tank a foot away from the window making that overlap much less noticeable. Would also make a nice space in the corner for a tall silk fig tree/stand lamp or the like.
I agree 100%, now only to get wife to agree. What the saying, ask forgiveness later? ha
That 240 that was posted above...mmmm