Hello,
If you do a search in the archived forums there is some decent information about this species. In my own experience they are a gorgeous, vibrant challange of a snake.
In terms of set-up, they are quite easy. Standard python enclosure, no need for extra water. They do not, in my experience, soak any more than any other pythons I keep. Just two hides and water dish, and my single male sheds fine at about 55% humidity. I spray a little bit when he is in blue, but other than that he does just fine.
In terms of size, that varies depending on locality. True Australian specimens attain a greater overall size, if I am not mistaken. Right now in the Classifieds there is a BWP (brown water python) for sale that is around eight feet. That is on the upper-end of the possible size spectrum. Adults cease significant growth somewhere between 5 and 9 feet, with the former number being a little more typical.
In terms of temperment, these guys live up to the liasis reputation, at least as babies. There are of course exceptions to this, but in general juvie water pythons are very defensive. I have never been struck by mine, but not for lack of trying. The plus side is that they are amazing feeders, on just about anything. Right now he is my small snake garbage disposal, taking care of adult mice and weanling rats. (He was born July 7th, 2003).
He is firmly convinced that he is a taipan, and acts accordingly. Once hooked from his enclosure, he calms down (a little) and can be carefully handled. Definately not a lap-snake, but when you see that brilliant shock of apricot on the belly, right after shed, and it contrasts with the stunning irridescence of a supposedly dull animal, you'll know why you keep them.
Here's a head shot, from a few months ago:
Take care and happy herping,
-SWA
