I forgot to mention. It also depends on the distance between the bulb and the basking site or animal. If it's pretty far then the heat will not be as strong. Check the air temp. as well as the basking surface. That should give you an idea if it is ok. Get a good thermometer like a Tempgun if you can.
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1.0.0 arg. b/w tegu
1.1.0 white's tree frog- popeye, jack
0.1.0 southern painted turtle- ms.tortle
0.1.0 crested gecko- crimson
1.0.0 pinto hedgehog- dante