Gary wrote:
I am about to setup a Marine Fish Tank in my hall, about 30 inches wide, and
24 inches deep, sitting on a 24 inch deep stand.
Do you think the tank will drive my cats nuts and really annoy them? I
really want it, but will avoid if it is cruel on the cats.

If they're anything like my cats were when I had fish, they may, on
occasion, sit and stare with rapt attention. Some may even get up on
top, hang over the side, and try to catch fish through the glass. Will
this mean they are being driven nuts? No more so than when they're
chasing after things on the TV screen or the mouse pointer on your
computer screen.