I have a 36x18x12 expo terra, my heat pad covers about 1/3 of the tank (wasn't quite as big as I had expected it to be), as for lights I haven't bought one yet, I've just been testing what wattages work with various different bulbs I have from my bearded dragon and past pets. I was thinking a 75 watt black heat lamp, for multiple reasons. As far as wattage I've tested a 60 watt and it couldn't quite get it up high enough, and with a thermostat that will just turn it off I would assume 75 is fine (correct me if I'm wrong.) I've heard CHE's kill humidity, and I've experienced it with frogs, so I was thinking a zilla black night heat bulb, as its in my room and I would prefer into be dark, and I find the red and purple ones really ugly. I will try covering the top with tinfoil for humidity and heat.