If you're having humidity issues in your open air cage you can go to Walgreens and get their ultrasonic humidifier. 1.25" flexible tubing fits in the output opening of the humidifier without any modifications to the humidifier. You can then run the tubing to the top of the cage, loop it around and then drill holes in the tubing. I have this setup on my open air Igg cage and it is working very well. I can send pics if needed. The humidifier will cost about $45.
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Green Igg 1.0.0
Beardie 1.0.0
Green Tree Frogs 0.0.2
Pac Man Frog 0.0.1
Green Anole 1.0.0