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

The crested gecko is a very popular reptile and can be kept easily as a new pet. It is a reptile that needs specific care. Your pet gecko requires careful attention, care & you have to make sure about the heating, humidity, and lighting needs of your gecko in its enclosure. 

To keep your pet happy and healthy, you should observe the factors that may affect your crested gecko nature. Habitat, temperature, humidity, lighting, and diet are some of the important factors that should be observed in maintaining your crested gecko’s health.

Humidity & Hydration

Crested gecko requires humidity between 60%-80%. This can be maintained with daily misting. Make sure to dry the tank at a level of 40%-50% before misting because constant misting can make your gecko sick. 

Misting is also the best way for your gecko to stay hydrated and your gecko may drink an inadequate amount of water from the dish whereas they prefer to lick water droplets around the enclosure and plants due to misting.

But humidity in the tank may be high or low which is not suitable for crested gecko’s health. This article will help you on how to lower humidity in a crested gecko tank when it is too high.

Ideal humidity levels in your crested gecko enclosure

It is recommended to maintain a humidity level between 50%-60% for your crested gecko’s tank. Try to keep changing the humidity in your gecko’s tank rather than keeping it constant. Night humidity should be as high as 80% than daytime humidity ranging between 50% to 60%.

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

What happens when humidity is too high in a gecko tank

Humidity may be high in a gecko tank depends upon the weather condition. In the case of a rainy spell, there is a high chance that humidity will increase for a couple of days. In this case, the humidity in the tank will remain high. But do not allow the humidity in the tank high for more than a week as it may greatly affect the health of your gecko and he may become sick. 

The humidity should be around 50% to 60% to reduce the risk of bacterial infections to your gecko. The increase in humidity may also cause lethargy, weight loss, and even death to your gecko.

How to measure humidity accurately in a tank?

Regular monitoring of humidity levels in the tank is very important, so you have to make adjustments to check it regularly. A digital hygrometer is considered one of the best options that offer easy to read display of humidity. Try to purchase a waterproof or water-resistant hygrometer due to 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 is a reliable choice that offers a digital readout. It offers a quick and easy display with a waterproof probe. This gauge helps you to measure the humidity in different areas of the tank easily. It 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. It is lightweight in design. It offers accurate data about humidity and temperature inside the tank after every two seconds.

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:

Maintain excellent ventilation inside the tank can help to lower the humidity levels. By increasing ventilation, you may easily notice a change in humidity levels. For increasing ventilation, 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, that will 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 in the room where you keep your reptile tank. If the humidity in that room is too high then you should try to lower the humidity in that room because the humidity is directly affecting the humidity inside the tank and increasing it.

Try to allow natural airflow by opening all the windows in the room or you may use a room dehumidifier such as a Seavon dehumidifier to reduce humidity. It is a highly efficient electric dehumidifier that can cover up to 2200 cubic feet which improve 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 home, you should know which type of substrate is better for your crested gecko.Many people use cypress much and coconut fibers but a problem with these substrates is that they maintain high humidity and when the humidity inside the tank is too high, so different nature 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, so misting twice daily is not good for your gecko’s health. Consider dropping misting to once a day if you want an optimum level of humidity in the tank.

Remove live plants: 

The live plants seem 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 humidityThe 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. You may achieve an optimum level of humidity through such heaters.


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, and even lead to death.

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