A 16x16x30 is awfully small for a a 6 month old Panther. You need to move him into an adult 2'x2'4' cage. Basking temperatures should be in the high 80's to low 90's. Don't buy any of those specialized Blue/Red heat bulbs, they're overpriced and useless. Use a regular incandescent, or if your fixture allows it, a Halogen bulb.