Originally posted by Jalexxi

Well, there's a problem with the test. You need to do a blind test for this, something like ten cups of water, five of which have been on that grid for a day, and five that haven't. Then someone places it in a random order and calls for a second person, who doesn't know which is which, to perform a taste test.
Otherwise you'll just end up thinking the water tastes different because you expect it to.

sounds good--what are the results???