So, as for the humidity in the tank, I had to make removable "covers" that were water proof. I had two CHE's on the top as well. What I did was make two panels from cardboard that had 9 inch holes in them (to ensure that the lamps had plenty of space not touching anything). Then I coated the panels in aluminum foil to help reflect heat and used foil tape to make everything look tidy. I used washcloths (changed every 24 hours) that I would soak in hot-ish water and lay on the screen under the panels. The cloths had to be re-moistened about every 8 hours. I was in school at the time and home a lot more.
In addition, I kept a moist hide (made from a terra cotta pot stuffed with sphagnum moss - this needed re-soaked every other day or so) in the tank at all times as well as sphagnum moss in little dishes in each of the back corners. The temps were easy to keep up. The most important thing that I had to overcome was that the tank was only top-opening, I had to removed everything anytime I wanted to take him out, change his water, clean the tank, etc.
To keep in heat, in the winter I stuffed a pillow behind the tank, and duck-taped two pillow (one on each side) to the outside of the tank. Without that I was much harder to keep ambient temps up.
In the AP cage I still use the terra-cotta pot (if you soak them in hot water for an hour or so, they slowly release the humidity over a few days) and when he's in shed, extra moss in the corners to keep up humidity, but its so much easier with front opening cages. I also still use CHE's for his main heat, but recently had to add a UTH. He outgrew his hides and the new ones were much thicker and not getting warm enough on the inside :/ I no longer need to insulate his cage with pillows, and the humidity is often stable for 4 to 6 days at a time instead of 12-24 hours.
Hope this helps
