This is my current coop setup. It's not pretty, but it works for us. My waterer uses two saddle-style nipples in that segment of PVC pipe. We just moved to a new area with colder weather than our old area, and we just had our first big freeze (it was 15 degrees when I left for work) and the nipples popped right out of the pipe. I love this system otherwise - it catches the rain from the roof to fill the bucket, and the nipples reduce waste.
Is there a way to "winterize" this setup? Would it work better with the red screw-in nipples? What if I wrapped the tubing in neoprene? There's no power anywhere near the coop - the closest outlet is about 100ft away on the side of my house.
Or should I just retire this setup for the winter and do something completely different until it warms up again? I need something extremely low-maintenance.