Hi All, Wanted to get some advice on when to put a heating source in.. It's going to get down to 30 tonight and has been raining for 24 hours so I'm sure the ladies are getting chilly... One: Do I just get the water heater so that water doesn't freeze? Two: OR do I get both the water heater and heat lamp? I've heard the heat lamp is over kill and sometimes might hurt them so any feedback is greatly appreciated! Thanks!