Ok please get rid of the coil UVB --- they are inadequate and will cause all kinds of health issues- so lets figure out first the cause for the reverse of sleep cycle- shes in the school what is going on at night ? Is the janitor in the room cleaning ? any lights on in the room shes in? We got our first bearded dragon from the school she was in the science room - lights on a timer that came on at 2 AM she was in a 20 gallon tank for a full size dragon which is way too small -I fixed all that when we took her over the summer---- so we need to figure out why she has suddenly changed sleeping schedule- lets go over the surface basking temps -- they should be 95-100 taken w/ a digital probe thermometer-- temps in the tank should range from surface basking to 95-100 middle of the tank 90's and cool side 80's - ambient temps at night should be 65-75-- UVB I am going to post links please replace as soon as possible - she is getting inadequate UVB as of now this will cause all kinds of health problems and can cause death --
pick one of the 3 please these are all for a 40 gallon + tank optimal tank size is 120 gallon or a 4x2x2
24"
Zoo Med ReptiSun T5 HO High Output Terrarium Hood this comes w/ a 5.0 bulb you want this bulb 22"
Zoo Med ReptiSun 10.0 UVB T5 HO High Output Fluorescent Bulb
or this one found at Pet Smart or you can order on line you want the 24 watt w/ the 12% bulb
Arcadia Reptile ProT5 UV-B Kit at PetSmart. Shop all reptile light fixtures online
www.petsmart.com
or this one you will need to change out the bulb that comes w/ this and use the one I posted above
you want the 2 ft or the 24"
https://hydrobuilder.com/sunblaster-nanotech-t5-ho-fixture-with-6400k-lamp.html
When you get the UVB please post on here and I will help you get it placed for the tank - it will depend on the screen