That is because that lamp is not a uvb generating light. It is nothing but a fancy version of the same lights you have in household fixtures and is really supplying nothing but heat.
A uvb lamp will specifically state that it produces UVB. You can generally tell by the price! A uvb light bulb will be 20 dollars and up.
However this is a must have for the health of your cham.

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Merlin,
What's Life Without A Little Magic!

Basking spot should be around 90 to 95 I keep humidity around 60% it hard to get anything higher in a screen cage, I Have been able to get higher but it drops pretty quick, My Cham doesnt have any problems with shedding at 60%, if your lamp was UV it should state clearly on the packaging.

There are a few live plants that Chameleons can use, The most common are Pothos, hibiscus, Umbrella plants or Ficus benjamani, Ficus "Alii", and Ficus natidia, hope this helps...

What is the best lighting set-up for Clyde? His new cage is 18x18x36 and he will have climbing vines etc allowing him to get all over his domain. Once again the looks of the light set-up is a big consideration. Clyde's health matters most, but...... So if it's ugly then so be it. My wife might still let me stay! She is quite fond of Clyde and kind of likes me.

I use a 100watt bulb out side the cage over head, I have is UV inside the cage and 60 watt shining in on the side to heat the middle of the cage,and Under Tank Heater at the bottom and back, you will have to mess around with certain watt bulbs to get the right temps.

If I do it right you should now be able to see Clyde.

Awww, he is gorgeous, you got yourself a real beauty there, thanks for sharing, did you get UV lighting sorted or know if you have it? it is vital for you cham to have

Nice looking little guy!!!!!

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Answers are great. But I prefer questions!

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After spending a number of hours researching Clyde's care requirements I have a couple of specific care sheets. Clyde's Scientific name is Chamaeleo bitaeniatus. He will get to between 4 and 6 inches long. He need proper ventilation and high humidity. The information differs on how high but range from between 70% and 100%. It looks like a cage misting system is in Clyde's near future. The Temps also range from 75, low 70's and a low of in the sixtys. The high range is 75 to 85 degree's. With all of the differing stats I believe I will go with the median temps and humidity. All stress UVB lighting so I believe I will call the Reptile UV people and get them to custom set up Clyde's UVB light. Expensive but I'll sleep better. I am ordering a drip system and will put in a waterfall. Clyde will of course get some live plants. I want to find some that are native to his area. Most agree that his kind comes from Sudan, Kenya, Uganda, Ethiopia, Tanzania and Zaire. A few different locals are Congo, Somalia and Madagascar. Anyone know of plants from these areas that are good for Clyde? The other question is Dusting Crickets, Some say that Clyde may be intolerant of heavy nutrients and others say to powder living daylights out of his food.

Any Comments or suggestions?

Welcome to you and to Clyde! He's a handsome cham!

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Some think they can. Some wish they could. Some do.

actually, wattage has nothing to do with heat emission, just how much enrergy it uses. if you get a thermostat or "fashion" yourself a rheostat (with a regular old dimmmer you can buy at home depot) and use your thermometer, its a heck of a lot better than messing around iwth wattage til you get the right temperature i like short cuts
Danielle