Chondro Myth #3: They Need 100% Humidity

How many times have you hears someone talk about having nearly saturated humidity in a  green tree python cage?  Perhaps even using one inch of water in the bottom of the cage as the substrate?  I’ve heard this from several folks who aren’t chondro keepers, so at some point this notion got started and it remains the prevailing theory.

When I first got into chondros, I would watch the humidity like a hawk.  I never used water as a substrate, but I would spray all my cages down with a misting bottle and make sure they stayed humid for at least 12 hours a day.  Now, having kept chondros for 10 years, I only spray them down once or twice a week unless they are in a shed cycle.  When I see that they are about to shed, having gone opaque and then cleared up again, I will begin misting them every day until they shed completely.  But that is all the spraying they get.  I use newspaper substrate exclusively, and 80-90% of the time their cages are bone dry.

If you ever get the chance to see actual field photos of chondros in the wild, lots of their habitat is scrub brush and arid, where they may get rained on every day, but when it isn’t raining the humidity is actually quite low.   Spraying them down from time to time has great health benefits, but keeping their cages wet or near 100% humidity all the time is begging for health problems.


  1. Hello from Australia

    Im about to buy 3 babies for $6000, and need help. ive read forums ect and cant get the right data.

    i have a 4ft melamime enclosure. im thinking of adding 1 150wat heat emitter in the middle, on the ceiling, with a thermostat. have 3 shoe box size cages and keep them in the cage.

    how humid should the babies cages be?
    are there better ways to position the heat emitter and the babie cages?

    can you give me any good responses


    • Hello – without pictures of your setup it would be difficult to offer opinions on whether the heat is in the correct place. Humidity though, you can let the cage elements and animals tell you if it is correct. How fast does the substrate dry out after spraying? Do the animals drink much from the spray droplets? How fast does the water bowl evaporate? Since you have cages within a larger box, the outer box now becomes the “environment”, and is much easier to control what goes on inside the individual cages. You can boost the humidity in the larger box without worrying about over-doing it in the smaller ones. You can use a sprayer, open containers of water, potted plants, mulch substrate – all of which hold lots of water and contribute to the overall humidity.


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