Heat isn't necessary, as it isn't required, is expensive to make difference, is potentially a cause of fire, and can be a shock if the power went out and they were accustomed to it.
Adding a few hours of added light, however, can be beneficial. All that's really needed is a small mini flor on a timer, to give them a few hours of pre-dawn light.
Adding a few hours of added light, however, can be beneficial. All that's really needed is a small mini flor on a timer, to give them a few hours of pre-dawn light.