My chicken's water is FOREVER dirty - no matter how many times a day we dump it out. I have been looking into this "Avian Aqua Miser" ( http://www.avianaquamiser.com/ ), but it looks kind of weird. Has anybody used this product? I'm concerned that the chickens wont be able to get enough water out of that tiny nipple. Does anybody have any other ideas about a solution to dirty water! Thanks!