It went down below freezing last night, turned on the 40 watt bulb with shield in the coop. I want to stay with my heat bulb and do not want to make or purchase any items to keep the water above freezing. My question is: Hang the heat source high or low. Ive read some where here, in the Autumn to keep it low in the coop.I had it about 3 ft. off the floor and the water was frozen. Not a big deal, but Id like to know there is water provided for when they wake up. I have a hanging plastic waterer.