I built a 55 gallon automatic waterer. Barrel is outside the run and has pvc running 5 ft to a pipe with water cups inside the run. Looking for suggestions of keeping it from freezing in the winter. Southern Indiana so we do get freezing temps but usually hasn't been too bad the past few years. The run and door to the run are too small for the barrel to be inside. Just worried about for when I have to be away for a few days. Would a submersible stock tank heater inside the barrel and some heat cable wrapped along the pvc pipes work?
*Having someone check on it while I'm away is not an option*
*Having someone check on it while I'm away is not an option*