How to Lower Humidity in a Crested Gecko Tank when it is too High

The crested gecko is a very popular reptile for it can be kept easily as a new pet. However, these reptiles need specific care such as having the proper heating, humidity, temperature, and lighting inside their enclosure. 

To keep your pet happy and healthy, you should observe the factors that may affect your crested gecko’s nature.

Humidity & Hydration

Crested geckos require humidity between 60%-80%. This can be maintained with daily misting. Most pet owners prefer misting twice a day for thirty seconds each. But in a humid environment, sometimes twice a day can also be too much for your gecko hence you should lower the misting to once every day.

Make sure to dry the tank at a level of 40%-50% before misting because constant misting can make your gecko sick.  You should remember that misting is also the best way for your gecko to stay hydrated as many geckos will not drink from their water bowls but instead depend on the water droplets around the enclosure and on leaves of plants, just as they would in the wild.

Ideal humidity levels in your crested gecko enclosure

It is recommended to maintain the humidity level at 50%-60% inside your crested gecko’s tank. Try to keep changing the humidity in your gecko’s tank rather than keeping it constant.

The humidity at night should be as high as 80% while daytime humidity should range between 50% – 60%.

 An average humidity that is higher than 80% may cause health problems for your crested gecko in the long run while humidity that is lower than 50% may cause dehydration and shedding problems.

What happens when humidity is too high in a gecko tank

High humidity inside your gecko’s enclosure depends upon the weather condition. The humidity might increase for a couple of days in case of a rainy spell, which isn’t something you should worry about. In this case, the humidity in the tank will remain high.

But do not allow it to stay high for more than a week for you will be left with a sick crested gecko.  The humidity should be around 50% to 60% to reduce the risk of bacterial infections in the skin, along with some parasites that might cause lethargy, weight loss, and even death.

How to measure humidity accurately in a tank?

Regular monitoring of humidity levels within the tank is very important, so you can make adjustments whenever necessary. A digital hygrometer is considered one of the best options as it offers an easy to read display of humidity levels. Try to purchase a waterproof or water-resistant hygrometer to protect from regular misting inside the enclosure.

The following are the two hygrometer thermometers that can be used to measure humidity accurately:

Zoo Med Labs digital thermometer humidity gauge:

Zoo Med Labs Digital Thermometer and Humidity Guage reliable choice that offers a digital readout with a quick and easy display and a waterproof probe. This gauge helps you to measure the humidity in different areas of the tank and also saves time by measuring the accurate level of humidity in a shorter time.

Govee Smart Hygrometer Thermometer

Govee smart hygrometer thermometer offers smart app control that helps you to measure the humidity and temperature inside the tank in real-time using a smart phone app. It has a sensor that measures accurate temperature and humidity with précised data along with graphs and reports and is lightweight in design. It offers accurate data about humidity and temperature inside the tank.

Ways to lower humidity when it is too high

There are six ways to lower humidity in the tank of your crested gecko:

Increase ventilation:

Maintaining excellent ventilation inside the tank can help lower the humidity levels. By increasing ventilation, you may easily notice a change in humidity levels. You can use a mesh top cover on the top of the tank to ensure ample ventilation.

If you have a mesh screen on the top and still you have ventilation problems inside the tank then use a small USB-driven computer fan inside the tank to help to reduce humidity and improve ventilation.

Use  Amazon Basics 3 Speed Small Room Air Circulator Fan that is very energy efficient and cost-effective to circulate air inside the tank and lower the humidity easily.

Reduce humidity in the room:

It is important to note the humidity level of the room where you keep your reptile’s tank. If the humidity in that room is too high then you should try to lower it as it is directly affecting the humidity inside the tank and also increasing it.

Try to allow natural airflow by opening all the windows in the room or you may use a room dehumidifier such as Seavon dehumidifier to reduce humidity. It is a highly efficient electric dehumidifier that can cover up to 2200 cubic feet which improves air quality to provide a clean environment with energy-efficient savings. It is fast, effective, and easily portable.

Change the substrate: 

Before taking your new pet to your home, you should know which type of substrate is better for your crested gecko. Many people use cypress and coconut fibers but a problem with these substrates is that they maintain high humidity which is why different types of substrates are required to lower humidity.

The best substrates that may help to lower the humidity levels in the tanks are:


They are easily available and quick and easy to remove and replace.

Paper towel:

Easy to identify feces and dust and they are easy to clean.

Reduce misting:

Crested geckos enjoy a humidity level of 50% to 60%. To achieve such a level of humidity most owners mist twice daily for thirty seconds. But when the environment is too humid, misting twice daily is not good for your gecko’s health. Consider dropping the misting to once a day if you want an optimum level of humidity in the tank.

Remove live plants: 

Live plants seem to be the most natural habitat for your crested gecko but they can boost humidity levels and becomes dangerous for your gecko’s health. To reduce humidity you should replace live plants with fake plants that are made up of plastic and easy to clean, such as Fluker’s Repta Vines-Pothos.

Use a ceramic heat emitter: 

Use a low-wattage ceramic heater that helps you to heat the tank without raising the humidity. Fluker’s ceramic heat emitter is a safe heat emitter that radiates infrared heat without light. This heater can be used as a 24-hour heat source and may help you achieve an optimum level of humidity.


To keep your crested gecko happy and healthy, you must pay full attention to the humidity levels of your gecko’s tank. Try to maintain optimum levels of humidity inside the tank. Too high or low humidity may badly affect your gecko’s health and he may suffer from parasitic infections, metabolic bone disorders, or even cause death.

I am the editor-in-chief at I have been a reptile enthusiast for over a decade, and during this time I have kept and bred a variety of different reptiles such as bearded dragons, geckos, and chameleons. I am passionate about sharing my knowledge and experience with others to help them provide the best care possible for their pet reptiles.

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