If you're using one of those analog hygrometers, it should be calibrated using a kit. Once you establish that the hygrometer is working fine, I would suggest attaching one or two 2.5" fans right outside the vent material. It should bring the humidity down to about 60-70%, provided you only mist occasionally.


The vertical conversion you have is much better suited for dart frogs or some other animal that requires less ventilation and more humidity. Dane from Junglebox sells one that has a bit larger vent area (~3.5"). Gray tree frogs are tolerant of a wide range of conditions, but tend to prefer a humidity of around 50-60%. Tree frogs in general require good airflow, else they can stress out or develop bacterial infections.


Quote Originally Posted by hjoe1112 View Post
Thanks John for the advice. Unfortunately the door is glass. Would it help if I installed a small computer fan somewhere in the tank? I hate to give up on the waterfall (it was a lot of work!) but as a last resort - I suppose I can drain all the water, remove the pump and just use some sort of water dish. I was hoping to have a somewhat self sufficient system - basically changing the water once weekly right now instead of daily with a dish.

I currently have gray tree frogs right now which seem to be doing ok. Hoping to make another tank and get other tree frogs which I know probably wouldn't like such a high humidity.