SO its getting colder here in CA (believe it or not) and soon I think its going to start dipping low enough that the water might start freezing. So I want to add some light but im wondering about how much of a heat lamp I will need. The dimentions of the coop are 4x5x4, basically a cube. How big of a heat lamp do you think I will need? When you add heat do you only let it run throughout the night/morning, or do you let it run all day in the coop? Someone had suggested somewhere that adding a red light would help with the problem of the winter egg break. Im wondering if this is true because if the heat lamp is on at night it will be a red light, and if thats going to bother them then I'll need to figure another way to heat the coop without lighting it up.