Lately it has been extremely cold and I've had to leave the heat lamp on all night. It is a 175W red lamp that I've read wont keep them up. I checked the weather, and it is going to warm up temporarily soon. I'm not sure wether or not I should start turning the light off at night, considering I'll have to leave it on all night when the weather gets cold again. I don't want to change their system, causing stress, just to have to change it back again. Should I just always turn the light off at night and bring the water in? It seems like a hassel.