I have an Exo Terra 18x18x24 inch Exo Terra terrarium. I was wondering if anyone could share some experience with me about heating them. I currently have a 100 watt infrared bulb on top which is working well but I noticed it is starting to melt the foam rock back board. I don't really use the hood because it only uses 40 watt bulbs. Has anyone had this issue ? Or does anyone have any suggestions for an alternative way to heat. Can't use uth it's for a arboreal gecko.