Ok, so a few days ago I got new regular coloured bulbs from the hardware store, as well as my temp gun.
When I got the temp gun, I measured temps a couple times through his tank. I didn't record exact, but close enough.
With the blue and red bulb
Cold side - 73
Warm side - 86
Basking - 110-120 being in the spot.
Now with the new single 90w halogen bulb
Cold side - 73
Warm side - 86
Basking - 110 up to 130.
The light in the cage now is significantly more bright/intense. I have a hard time understanding how this if better for their eyes... But I'll take your word for it.
Now, I will mention that I only tried the gun a couple times before the bulb switch, and several times after. I seem to get discrepancies depending on what I hit with it. I would have thought that the basking spot would be roughly the same all over, but depending on the angle and material I hit, I'm getting different readings. Not really sure what to think. I can tell you this though... His temp seems to stay at about 90 while basking (he stays just outside of the direct light). My female is the same... But just a touch warmer.
Post parasite treatment, they both had a significant increase in appetite. Now, they both seem to have slowed down significantly on eating. Maybe I'm just paranoid? Or maybe they were starting from not eating for 2 weeks, so they were playing catch up? Hopefully it's nothing.