Is there an auto watering system that does not utilize a 5-gallon bucket but is still easy to clean and has little wastage (nipples or cups)? I only have 8 chickens, and I imagine it will take them quite a while to get through a bucket full of water. I seems like the water would get hot and possibly get algae in our very hot summers. I have enormously fluffy Orphingtons that need all the help they can get to stay cool. I have a water line right at the coop and am assuming that an auto-waterer would be best, but I'm open to any system that meets our needs. I just want to minimize cleaning and wastage and be able to leave for a few days without having to hire a chicken sitter. Thanks.