OK here's how it stands:

I'm gonna pick up one of those CVS humidifiers and hook it up to a hydrometer/controller that'll turn off when it is humid enough.

Also, starting to think my bedding and the stuff inside the enclosure is a lot of the problem.

When you get eco-earth, you hydrate it first, yes? The stuff I bought ("forest floor" cypress mulch) seems to come a little moist but dries out quickly.

Lastly, is it possible the big piece of driftwood I put in there and the lace rock are acting like dry sponges and just absorbing the moisture? After my sprayer sprayed this morning, I noticed the humidity was down to 12% again within a half hour, lol.