I have 11 chickies - cutest things I ever did see - and they are due start laying about now. They are only getting about 11 hours daylight. I know I am supposed to give 14 - 15 hours of light, using artificial light, to get eggs. I would rather let nature take it's course here, but wonder about a couple of things...1) will this hurt the girls in any way. 2)what effect will this have on their laying - no eggs at all, fewer than normal.... 3) the artificial light would also supply a little heat in their pen. Is this necessary in an insulated pen? Philadelphia, PA area. Thanks folks!