How to easily lower the humidity in a bearded dragon tank

They are small lizard-like creatures that have spiny scales on their body. They may grow about 15-20 inches long. Their unique pattern of scales in the form of a beard under the chin just like that of a dragon gives them their name “bearded dragons”.

The scales may also swell up according to their mood. They have a broad triangular head and their body consists of a tail and stout legs.

Best humidity for bearded dragons:

Finding out the humidity level for bearded dragons is not an easy task as these reptiles are easily influenced by their humidity. It is an important consideration when it comes to their health as too much humidity may cause respiratory infections and too little may lead to skin issues like shedding.

The ideal level of humidity among bearded dragons should be between 30%-40%.

The best way to monitor humidity among bearded tanks:

Bearded dragons are socially compatible and can be housed together easily, but their humidity should be monitored carefully. The best way to monitor humidity among them is the use of a hygrometer.

The hygrometer is an instrument that may be used to measure the amount of water vapor in the air, in soil, or in confined spaces. Different types of hygrometers are:

  • Psychrometer
  • Mechanical hygrometer
  • Digital hygrometer
  • Analog hygrometer


It consists of two bulbs, a wet bulb, and a dry-bulb thermometer. The amount of evaporative cooling on the wet bulb depends directly on the amount of moisture in the air. Dry air absorbs more moisture while wet air cannot absorb as much from the bulb therefore, the lesser change in temperature of the bulb shall indicate more humidity in the environment of the tank.

Then by knowing the difference between the wet and dry temperatures and the atmospheric pressure in that location, one can determine the humidity of the air.

Mechanical hygrometer:

It is a humidity gauge that is designed to measure humidity level by using an organic material, usually a piece of hair, where its behavior can easily predict the amount of humidity in the air. You can easily measure the humidity level through good android phones where wireless sensors can easily get attached to innovative and expensive hygrometers to measure the amount of humidity.

Digital hygrometer:

It is designed to measure the amount of water vapor in the air i.e. humidity level by calculating the amount of percentage of humidity in the air along with the current temperature. Like this digital hygrometer.

Analog hygrometer:

It is a humidity gauge that is designed to measure the humidity level by using analog sensors. These analog sensors measure the humidity in the air and then readout on a digital gauge.

Where to place the hygrometer:

Hygrometers should be placed carefully inside the bearded dragon’s tank because the temperature level is around 20 degrees Celsius and it is different from one end to the other. A hygrometer should be placed centrally to calculate the exact level of humidity from one cool end to the one hot end.

Problems occur due to high humidity:

These reptiles may suffer from serious respiratory ailments and skin problems if the humidity level becomes too high. They become uncomfortable and it may deeply affect their health and life span. It would also be difficult for you to take care of such a little reptile if you do not maintain a moderate level of humidity in his tank.

How to lower the humidity in a bearded dragon tank:

In some cases, a new owner takes some time to easily understand what kind of environment works best for his pet. Similarly, in the case of your reptile tank, you cannot always be aware of the tank conditions. In case the tank becomes too humid, there are a number of ways with which you can decrease the humidity:

  • Adding Ventilation
  • Change the water bowl
  • Stop add mist if the temperature is under control
  • Adding dehumidifier
  • Sock with rice
  • Use a mesh top
  • Review basking bulb temperature in a tank
  • Remove live plants
  • Change the tank location
  • Change the substrate

Adding ventilation:

If your house is structured in a way that does not provide good air circulation, then it may harshly affect the humidity level among bearded tanks. You have to allow more air to circulate in your house by opening room windows, turning on a fan, run the AC to balance out the humidity level within the tank.

In addition to that, the cage itself should allow for proper air ventilation. Not every cage is equally made. You need to pick the one that offers fresh air to your beardie at all times. Here is our list of best tanks for bearded dragons that have better ventilation systems.

Change the water bowl:

Usually, the water that these dragons need comes from the food they eat hence if you have a water bowl around, it could be a source of humidity. You can remove the water bowl from sources of heat such as the basking lamp to a cooler area of the tank to reduce humidity.

The size of the water bowl should be according to the size of the tank and shouldn’t be larger than your bearded dragon as the water will easily get absorbed into the air and contribute to higher humidity levels.

Stop adding mist if the temperature is under control:

Sometimes the temperature of the tank may be kept under control by misting it from time to time. Too much mist for keeping the humidity levels high may become a serious problem. Therefore if the humidity level is under control you should stop misting it and let the temperature settle down.

You really have to find the balance of not overdoing it. If the tank’s humidity level starts to increase then stop misting for a while till it settles down. A simple yet effective solution.

Add dehumidifier:

If the humidity level is too high and you want to lower it to ideal humidity, then adding a dehumidifier is a great option. The refrigerant dehumidifiers are reasonable and suitable options. I recommend using this one by home labs.

Soak with rice:

Rice is good for absorbing extra humidity. Fill a sock with rice and place it on the cold side of the tank. It may help in decreasing the humidity level of the tank.

Use a Mesh top:

If the problem of humidity is just with the tank, the moisture in there needs to escape. It can be easily done by using a mesh top which will let the water evaporate in the air and lower the humidity inside the tank.

Review basking bulb temperature in a tank:

Another way to lower the humidity inside the tank is the use of a basking bulb. Try to maintain the temperature inside the tank by burning up some heat using a basking bulb. Buy a basking bulb that is a bit hotter than the current bulb temperature. It may burn off the excess moisture from the tank.

Remove live plants:

If you have live plants in the tank, they may high up the humidity because of the transpiration     (water evaporated from plants). Therefore you need to remove the live plants from the tank to lower the humidity level.

Change the tank location:

If the room is too humid, where the bearded dragon’s tank is placed, then it may increase the humidity level inside the tank. First, you have to measure the temperature inside the room. If the humidity level of the room is high you have to change the tank location and place it in another room.

Change the substrate:

Do not ever try to use loose substrate for the bearded dragon’s tank as they ingest it. Certain types also cause a high level of humidity such as moss and coco fiber etc. Also, try not to use sand because when the sand becomes wet it harbors bacteria and is dangerous if ingested.

Do your laundry outside:

If your laundry area is inside the room where the bearded dragon’s tank is placed it may cause a high level of humidity as it may generate more water vapors inside and therefore affect the tank’s humidity level. That is why you should try to do your laundry outside.


Maintaining humidity among bearded dragon’s tanks is very important. The slight increase and decrease in humidity level may lead to serious health problems. These reptiles are not meant for moist air. If humidity is building inside a tank try to change the cover, basking bulb, water bowl.

If it is building outside a tank so try to run an AC, use a dehumidifier, open a window, and increase your ventilation. These methods will help to decrease the humidity level.

I am the editor-in-chief at, a site that is devoted to reptiles and the people who love them. I have been keeping and breeding many pet reptiles such as bearded dragons, geckos, chameleons, etc. for over 10 years now.

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