gravity water bowl: 10 Things I Wish I'd Known Earlier

http://l6semwc053.nation2.com/the-worst-videos-of-all-time-about-automatic-pet-f

Only drawback is that the water will get hot in the bowl and in the hose, with the hot summer we are having - 100+ degrees. I just dump out the hot water, until the cool water starts to flow. Super convenient.