I have been having the same problem but don't want to get too strong a light that will disturb them. What wattage do you suggest with the red. How about Black light? I thought of buying one of the new, 7 year black bulbs from a regular store. I had heard black light was invisible to Frogs and those bulbs at the Pet Stores are so expensive. I know there's a difference with the daytime bulbs for UVA/UVB, but is there a difference with the red or black bulbs between those meant for pets and regular household bulbs?