How do I maintain the right temperature and humidity in my crested gecko's enclosure?

Creating the Ideal Gradient

Your crested gecko's enclosure should have a basking side of 80°F (27°C) and a cool side of 72°F (22°C). This gradient allows the gecko to regulate its body temperature by moving between the warm and cool areas. The humidity should be maintained between 50–70%, dropping to around 50% between misting sessions.

The gradient is crucial because crested geckos are ectothermic, meaning they rely on external heat sources to regulate their body temperature. By providing a temperature gradient, you enable your gecko to self-regulate, which is essential for their health and well-being.

The cool side of the enclosure should be at the lowest level, while the warm side should be elevated to create a natural thermal gradient. This setup encourages your gecko to move to the warm side to bask and then to the cool side to cool down.

• Maintain a basking side temperature of 80°F (27°C).
• Keep the cool side at 72°F (22°C).
• Ensure humidity ranges between 50–70%.
• Mist the enclosure to drop humidity to ~50% between misting sessions.

Controlling the Variables

To control the temperature, use a heat source like a heat mat or a heat lamp on a thermostat. Place the heat mat under one side of the enclosure or position the heat lamp above the basking area. Set the thermostat to maintain the desired temperature range.

For humidity control, use a substrate that retains moisture, such as coconut fiber or orchid bark. Ensure good ventilation to prevent mold growth. Use a hygrometer to measure the humidity at the animal's level, not at the substrate level.

It's important to place the thermometer and hygrometer at the same level as your gecko to get accurate readings. This will help you make adjustments to the heat source or ventilation as needed.

• Use a heat mat or heat lamp with a thermostat.
• Position the heat source to create a 8–10°F (5–6°C) gradient.
• Use a hygrometer to measure humidity at the animal's level.
• Mist the enclosure to maintain humidity between 50–70%.

Observable Signs of Imbalance

If the temperature is too high, your gecko may appear lethargic, have open mouth breathing, or exhibit aggression. Conversely, if it's too low, the gecko may be cold, have a slower metabolism, or experience difficulty shedding.

Humidity levels that are too high can lead to respiratory infections or skin issues, while too low humidity can cause dehydration and stress. Always observe your gecko's behavior and physical condition to ensure the environment is suitable.

Regularly check for signs of stress, such as changes in appetite, weight loss, or aggression, which can indicate an environmental imbalance.

• Lethargy or open mouth breathing at 80°F (27°C) indicates overheating.
• Cold appearance or slow metabolism at 72°F (22°C) suggests hypothermia.
• Respiratory infections or skin issues at 50–70% humidity indicate high humidity.
• Dehydration or stress at 50–70% humidity suggests low humidity.

Lighting and UVB

Crested geckos require a 12-hour day/night cycle. Use a timer to maintain this schedule. Provide a UVB light source for 10–12 hours per day to ensure your gecko receives adequate UVB radiation for vitamin D3 synthesis.

The UVB light should be placed above the basking area but not too close to the gecko to prevent overheating. Ensure the light is on for the specified duration and off during the night to simulate a natural day/night cycle.

It's important to use a UVB light with a lifespan of 6–12 months to ensure it provides the necessary UVB radiation.

• Maintain a 12-hour day/night cycle.
• Use a UVB light for 10–12 hours per day.
• Keep the UVB light on for 6–12 months.

Keep reading about Crested Gecko: Crested Gecko care sheet

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