Ive been thinking since my fishes 55 gallon tank is empty now and sitting out in my garage. Does anyone have a goos system for cleaning gravel out of the tank? Ive been using the same 3 inches of natural colored creek stone for about 10 years now. Is there a convienent way to clean it all before resetting up the tank? Or maybe its time to just chuck it and buy new? I was thinking the fish might look better with black gravel. Any ideas? Id hate to waste all that gravel, but im sure its pretty nasty.