Humidity way too high.

So I've finally got everything in my AP T8 cages working and set up but the humidity is way too high for a ball python. With the glass doors closed and within a few hours it hits 90% I live in the Midwest and my room naturally sits at 60%. What is the best way to fix this, drilling holes? If so how big should the holes be and how many will it take to reach an optimal level?

I have the same issue with my tub, humidity is too high.... The only fix I have found is opening it now and then for 5min that fixes it for a few hours..... Holes might work, I'm not sure, if anyone knows a better solution please share!

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You can drill holes but no one can tell you how big or how many you soecifically need.. That will depend on the enclosures location. Start with a few holes, let the tank even out and add more if you need to.

what are you using for substrate?

Cyprus mulch as the substrate.

Did you pre-dry the substrate? I never really saw anything instructing I do this, but I found that with a tank that doesnt have much airflow, moist substrate will skyrocket your humidity

Air/heat dry the substrate in advance so it starts out in the enclosure maybe too dry and mist gradually until the humidity is at the desired level.


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Once your substrate dries out it will drop down. Or switch to something like aspen or newspaper. Every time I add new damp substrates my cages jump to 100% for a couple days.

Change your substrate would be the easiest option
I've seen some funky ways of using dehumidifiers if you fancy rigging something like that up tho.

I have to drill holes in all of my tubs for the same reason. It's a really simple fix. Small holes is all you need, thinner than a pencil. I use my dremmel to drill the holes. I drill holes as needed. If I notice the tub is still too humid I drill more. Usually one row of holes across the top front of the tub is enough. If you ever need more humidity you just cover the holes with tape.

If you drill holes and use damp substrate then you will have to drill alot of holes to get rid of the first week or 2 of high humidity the substrate will give you and then you will have to many holes for when it dries making it less humid and harder to heat.
Have to make sure that substrate is dry before putting it in if you want to use Cyprus mulch

I did not dry out the substrate I knew it was moist but I didn't know that it would contribute so much to the humidity. Thanks so much everyone!t

This is an older thread but I figured I'd post here before starting a new one.

Also dealing with essentially the exact same issue and per the above poster's comments I don't want to drill any holes in my T8 since it will probably lead to lower humidity than I want after a bit.

Is there anything I can do to help dry it out in the meantime? Should I blow a fan into the cage? Would it be better to have the glass doors on but with space on the left and right sides, or to remove the doors completely?

Or maybe putting a fresh box of baking soda in the cage?

I’m also gonna hitch hike on this thread. Just put my Dumeril’s in a new 4x2 and her humidity is over 90%😱 From what most have said, it will drop over the next week or so?

Lol it will drop after a few days-a week, had the same experience when I first got a boaphile and put fresh cypress in there. What I do now is pour the cypress into one of my temporary tubs, let it sit uncovered and mix it around a couple times. In a day or so it lets out the initial crazy moisture and it's good to go

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