Over here in England we use thermostats with every reptile we have. So if we want a 200 watt bulb on our chemeleons we can as the thermostat will just turn it off when it reaches desired temps. Do people in the US use thermostats. as I have noticed a few people not being able to get temps right with a 60 watt and too hot with a 100 watt. Why not just use a thermostat?