What kind of wattage light do I need to trick my chickens into laying more eggs? The specifics of my application are putting it in a roughly 4'x6' coop. I happen to have a low voltage lighting system for landscape lights that is already on a timer and is only a few feet away from the coop, so I'd just tap into that system... I was thinking of maybe a 20 watt halogen. It is relatively warm where we are, so heat output makes no difference... just looking to simulate more daylight. I'd like to use the smallest light possible in order to not tax the existing system more than required.