The photo was taken at 2am, so it is 'night' temps and humidity! 29C is on the cool side of the tank. Taiwan is very hot in the summer. Everyday is 30-32c, ALL day, till early hours it drops, as you can see, not much.
Funny enough, my girlfriend just told me in our room upstairs, it's 34C this morning!
Also, there is no covering at all over the screen lid, and i never spray the bark!

I only use the light, because in summer, the other stuff would be a waste! UTH, CHE etc.
I have the light on a dimmer as well, it's turned just over a quarter, and it comes on for no more than 5 minutes to heat the hot side up.
At the moment it's mid-day, and the 'cool' side is 30c with 65% humidity.