In a glass enclosure with a heat lamp, it's hard to keep the humidity up. You can try coco husk substrate but the heat lamp will keep drying it out.

I have the same issues with my glass tank. I mist once a day to keep it up. Also, try to seal your foil a little better so less humidity escapes.

Can't wait to go PVC or wooden enclosure to get away from the humidity and heating problems.

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