Looks like the 10% UVB tube is sitting ontop a very fine mesh lid, even if it's a T5HO tube , this is not good, the mesh I can see in the image will be blocking about 40% of the UVA and UVB.
See this for how I calculated this shading factor :
viewtopic.php?f=34&t=235210&p=1809330#p1809330
See this for how to calculate the best position for UV basking spot (distance from the source) :
viewtopic.php?f=34&t=235611
Aim is to have about 180-200 microW UVB / sq.cm at the basking spot.
Note a reflector will double the UV from a source by focusing the UV and redirecting UV that would otherwise be wasted towards the basking spot.
Example calculation of best distance globe to basking spot ":
if ontop of a mesh
if it's fine mesh, you need to compensate for the 38% loss ,
so the correct distance is X = (1-0.38)x ,
ie Arcadia T5HO 12%UVB in a reflector hood is x = 27cm , so X=(1-0.38)*27 = 16.7cm
In the case of a T5HO 10%UVB tube , all rest same , X = 16.7 * 12/10 = 20.0cm.
Another issue is that you seem to have no accurate thermometer , so you have no real idea what the temperature is at any location in the viv , ie
at the basking spot
in the warm zone
in the cool zone.
Those dial style analog thermometers are so inaccurate that they are useless. Could easily be reading 20 degF too warm or too cool.
Maybe you have another thermometer : if so what exactly is it ?
.... so we can check if it is an accurate one.
I strongly recommend buying a brace of digital thermometers similar to this
http://www.ebay.com.au/itm/1-LCD-Digital-Temperature-Thermometer-Fridge-Freezer-Aquarium-Fish-Tank-Reptile/172452294173?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140107090050%26meid%3D2f7042e06fbf49ef8ed29ef34ebfc083%26pid%3D100011%26rk%3D1%26rkt%3D12%26sd%3D391259141696
I've tested the ones I have and they are very good , +/- 1 degC (between -20 and 140 degC) , I tested them under laboratory conditions against substances of known melting and boiling points and against a type T thermometer.
I use 3 to 4 per full size viv (4x2x2) and rearing tub (100L) and they are very reliable.