I'm searching for a cold weather waterer design that I had a diagram of several years ago. I had a barn fire two ears ago and my plans were destroyed. Now that my new barn has electricity I would like to build the waterer. The design had a large cooler for a reservoir - a tiny water circulating pump - a small submersible heater in the cooler - PVC pipe to a horizontal manifold with about ten watering nipples. The warm water is circulated throughout the entire system 24/7 and the system does not freeze. In warm weather you simply turn off the pump and the heater and the system works good. Any ideas as to where I can find this DIY design again? Thanks.