Eventually you'll want a tub. Soooooooo much easier to control their environment. Not as cool for us to look at them in, but whats more important, their health/happiness, or ours?

If my snakes ever have problems shedding (which happens rarely since i put them in tubs.) I usually just fill the bathtub with an inch or two of warm water and let them "bathe" in it for about 15 minutes. Then they have no problem removing the excess on their various rough rocks and half logs