I heard on one website that a brooder should have a 250 watt bulb, and on another site i found that an incubator should have a 25 watt bulb. I was going to use the same incubator as a brooder and to hatch the eggs, so did one site make a typo? Should it really be a 250 watt? 25 watt seems like its not strong enough but i don't know anything about lightbulbs...PLEASE HELP!