I have added a 25w bulb to the coop on a timer to make sure the girls get about 14 hours of light. But is a 25w bulb bright enough? I wanted them to be comfortable enough to roost, so not too bright, while at the same time I want to make sure they get enough light to keep laying all winter. (Note: Keep them laying once they START laying! LOL!!). Anybody have experience with this that can give me some advice?? Thanks!