If you using a coil UVB --- a 13 watt to be exact your dragon is basically getting NO UVB and that would be a reason for the behavior change --- yep thats what I thought ------------- you need to ditch that thing --- they are bad news ---- you need this
Which
UVB light should I use?
The best
UVB light is a ReptiSun 10.0 fluorescent tube HO (Or Arcardia 12% in the UK). Compact or coil bulbs do not emit the proper amount of
UVB light for a bearded dragon, and should not be used. Other brands, such as the Zilla Desert Series and ReptiGlo have been known to cause eye problems and other health issues with bearded dragons, and should be avoided. The reason that some UVB lights (Zilla, ReptiGlo, coils/compacts, ect.) are considered dangerous is because the wavelength of UVB that they emit is shorter and more intense than the wavelength of the "safe" lights (ReptiSun, Arcadia). UVB lights should be replaced every 6 months. The T5’s are a strong bulb and only need to be replaced once a year – the T 8 every 6 months--- where as the T 8 are not as strong—they need to be placed inside the tank the T 5 10.0 bulb approx 12-15 inches from basking spot – the T 8 approx 8-10 inches from basking spot—the cover needs to be off the bulb for full effect of the UVB rays-- if you need help on getting this please ask ---the Reptisun is one of the best on the market at this time
This is without a doubt, one of the most trusted if not THEE most trusted
UVB bulb on the market right now for bearded dragons. This fluorescent light will provide an adequate amount of UVB for most enclosures and will last anywhere from 6 to 12 months on average.
Karrie