Ok, so I finally got an automatic system going. I don't know how I ever lived without it. Here's the pressure regulator: It's connected to several things. The 1st is a waterer I got from a turkey farm. It's used by my Freedom Rangers and Muscovy ducks. (Yes, I know this isn't a chicken or a duck.) Next, I have a 1/4" tubing connected to PVC which runs through a cage system. This serves some chicks and several rabbits. The nipple system is great in that it stays clean. Might be an issue in winter, we will have to see. Here's the front of that cage with the resident cleanup crew working hard. I'm a big fan of stacking. I've yet to have to shovel any rabbit manure. What do you guys think? See room for improvements?