I think that I just found the perfect light bulb to heat my two 4x8 coops. http://store.houseofpets.us/643854823441.html
Right now in minus 10*F outside temps, similar bulbs that are 60 watt are keeping the coops above 0*. I think 150 watt ones like in the URL will keep the temps above 15*F no matter what. I'm going to order two of them, but first I'm going to call the local pet store to be sure that I can't save shipping costs.
Right now in minus 10*F outside temps, similar bulbs that are 60 watt are keeping the coops above 0*. I think 150 watt ones like in the URL will keep the temps above 15*F no matter what. I'm going to order two of them, but first I'm going to call the local pet store to be sure that I can't save shipping costs.