Ok, so I have been told several different things. I need to bring up the ambient, but was using a red bulb that gave me a BAD migraine. I was told to use a ceramic bulb, but then was told it would melt the tub.

One petstore is telling me to cut a hole out of the tub because the bulbs/ceramic heater WILL melt the plastic, the other is telling me it will be fine. Any ideas/suggestions?