I have a JV Cal King. She is in a 30 gallon aquarium. I do not have central a/c, and the room I keep her in stays around 85 degrees. My problem is providing a cool side for her. I don't need heat lamps or anything to keep it warm, but there is no temperature gradient in the aquarium. Any ideas? or is this alright? It does drop to around 72 at night.
Thanks,
JB

