>I would submit that there are probably as many cases of adrenal disease >in ferrets in locales with hard water as with soft. Suffolk County on Long Island has some of the softest water in nation. Water heaters rated for 5 years elsewhere can sometimes last 15 as result without Magnesium rod change every 5 eyars. Inner mountain west has some ofth hardest pre-treatment. If people want to compare, can. The list of postulated contributors to adrenal neoplasias is as long as an arm... Belief is not knowledge; it's belief. That is why studies are done. [Posted in FML issue 3256]