With winter coming and temperatures in wyoming already dropping into the low 40's I am beginning to research the best bucket heating solutions for horizontal nipples. I have seen recommendations for 150 watt to 250 watt but there are a million different brands The temperatures here drop to -20 sometimes for a week straight and I am trying to find best heating solutions This will be my first winter with chickens and I want to do things correct. I currently have a 5 gallon bucket with 3 horizontal nipples for my 6 birds. Experienced cold weather chicken folks please give me some advice on the best heaters and wattage required to keep the water flowing through the nipples all winter long. Surviving a long wyoming winter is hard enough for humans..... Hopefully the birds will survive Thanks!!!