Hi everyone. Today I changed Dale's substrate to the Mosser Lee moss and he immediatedly dug into it and hid. It was so funny to not see him. I'll post pictures later when I'm all done. My question is I went to buy a ceramic heat emitter today and I'm not exactly sure what watt to buy. I read one thread on here that said for 14 inches down get 250 watt. Dale's tank is about that, but I'd like to have backup advise before I buy it since I've already bought 3 lights that the pet store suggested and after reading this site I now know I only needed 2. I have the red light (nighttime) on him now it is 75 watts. I broke the white light that I used for daytime when I was spraying the tank today. I just bought the holder for the heat emitter that has the adjustable heat control and I actually bought a ceramic heat emitter 150 watt but I'm afraid to make it too hot for him. It's all new to me please help. One more thing.....When I figure out which watt bulb can it be sat on top of Dales tank like my other lights or do I have to clamp it? Candy