the standard 4:1 solution starts freezing at 26-27 degrees F. You are right sugar would not be feasible in those frigid temperatures. I personally use the 2 water jug system and exchange them every day during the winter months (I also am retired which give me the time to check on the hens numerous times a day if needed).Do you know how much sugar will be needed to keep a 5 gallon waterer
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