A few things that worked for me, I still need to pump it up a bit and I'll be getting a room humidifier in the next week or so.
The damp towel on the screen has worked very well. I spray it every morning and night.
I also mixed moss into his coco husk substrate, which increased humidity.
I put the water bowl over the heat mat which has increased evaporation. I have to fill it nearly twice a day because it evaporates so quickly.
Lastly I covered almost the entire screen top with foil. This did spike my temps a bit and I had to adjust my thermostat accordingly, but it has done a lot for my humidity.
Using these methods I bumped it from a dreadful 30% to a decent 45-50%. As I said, last step is a humidifier for the room. NOT one like a reptifogger or mistking (that goes directly in the tank) but rather one that will sit outside the tank and project water vapor throughout the rooms air.