Hi everyone, we got our first meat chicks in... Their doing well.. I've read some people say leave lights on all the time, for the first couple weeks, than just durning the day... I've had some people say. lights on all the time... (this seems kind've cruel) We live in Canada, and the nights are getting cold. They need it for heat... So has the chicks grow, how old are they when they don't need the light and can tollerate some cold? What temp is too cold/ at what ages? Thank-you everyone!