lauraj1055":2v0vw3pm said:
Cheryl from Rio Reptiles has done extensive testing on the Powersun bulbs and has found those to put out the right amount of UVB. I would only buy the Powersun if you want to use a MVB.
http://www.beardeddragons.co/beardeddragon/index.php?route=product/product&path=63&product_id=54
The 100 watt doesn't seem to put off much heat. I have always used the 160 watt in a 40 gallon breeder.
Funny, I continually hear people worrying that the 100 watt is TOO hot! I use 100 watt bulbs on most of my cages at home, and find that when provided with a basking spot close to the light, it does create hot basking area. It works well for 36" long cages and/or larger cages that have warmer ambient temperatures. Here in Southern California, 100 watts is an ideal summertime bulb - most homes set summertime AC temps to 78, and with a 100 watt powersun about 6" away for basking temps, this works well.
In winter, a 160 watt bulb is often a necessity, when the ambient temps drop at least 10 degrees to 68 in most homes.
In our stores, we use powersun bulbs on all of our chameleon cages (animals that are extremely sensitive to light quality and heat), as well as raise our baby tortoises and uromastyx under them. Their effectiveness and quality are so noticeable that most of our staff also uses them at home, and when almost every single staff member will spend almost $50 on a bulb when there are less expensive options out there tells you something about the bulb! We see the results of customers using the bulbs in addition to coworkers and in-store animals, and nearly every staff member after just a month or two of working here will switch their diurnal basking animals over to powersuns. That tells you something!
-Jen