The bulb is safe to use, they should be kept at a range of 80-85 day and 70-77 night. Depending on the heat in the room you might even need a more powerful bulb. i prefer to go over board and use a 75 on a dimmer set to very low, but with this you need something to help with the humidity. Cute frog, i cant wait till my current Whites Tree Frog gets older and starts filling out.