IF you have leftover carpet, make a nice mat in the shape of your stand, out about 10"/25cm or so all around. Then you have double carpeting around the tank - and yes, it will get wet no matter what.
OR you could shop around for a nice hex rubber mat with a lip on it, and put everything on that.
Best Option So Far: StirCrazy's basement den idea - that rocks. Then you get your own room, and a floor drain! Put in an high-volume exhaust fan, and you can sit in front of your tank with a nice cigar...
Mmmm...
