How do I choose the right heat source for my leopard gecko's enclosure?
Maintain a warm side of 88–92°F (31–33°C) and a cool side of 75–80°F (24–27°C) for your gecko's optimal health.
Understanding the Temperature Gradient
Your leopard gecko requires a thermal gradient within its enclosure. This means the warm side should be 88–92°F (31–33°C) and the cool side 75–80°F (24–27°C). The gradient allows the gecko to self-regulate its body temperature by moving between the warm and cool sides.
Leopard geckos are ectothermic, meaning they rely on external heat sources to regulate their body temperature. The warm side is crucial for digestion and activity, while the cool side is for resting and shedding.
- Warm side: 88–92°F (31–33°C)
- Cool side: 75–80°F (24–27°C)
- Maintain a 13–17°F (7–9°C) gradient between the warm and cool sides.
Controlling the Heat Source
Use a heat lamp or under-tank heater to create the warm side. Position the heat source so that the warmest spot is 88–92°F (31–33°C) at the basking spot.
Ensure the cool side is at least 75–80°F (24–27°C) by placing it away from the heat source. Use a digital thermometer to measure the temperature at the gecko's level.
Adjust the heat source's intensity by moving it closer or further away from the basking spot, or by using a dimmer switch if available.
- Use a heat lamp or under-tank heater
- Position the heat source for a warm side of 88–92°F (31–33°C)
- Measure temperature at the gecko's level with a digital thermometer
Humidity and Lighting
Maintain a humidity range of 40–60% in the enclosure. Use a hygrometer to monitor humidity.
Provide a hide with a damp substrate to create a humid microhabitat for shedding and molting.
Use a UVB light for 10–12 hours a day to simulate natural daylight and support vitamin D3 synthesis.
- Humidity: 40–60%
- Use a hygrometer to monitor humidity
- Provide a humid hide with damp substrate
- Use a UVB light for 10–12 hours a day
Observable Signs of Imbalance
If the warm side is too cool, the gecko may become lethargic and have difficulty digesting. If it's too warm, the gecko may overheat and exhibit panting or open-mouthed breathing.
On the cool side, if it's too warm, the gecko may not rest properly. If it's too cool, the gecko may become stressed and may not shed properly.
Monitor the gecko's behavior and appearance daily to ensure the temperatures are within the desired range.
- Lethargy and difficulty digesting on the warm side
- Overheating and panting on the warm side
- Inadequate rest on the cool side
- Stress and improper shedding on the cool side
Keep reading about Leopard Gecko: Leopard Gecko care sheet
Related questions
How often should I check the temperature in the enclosure?
Check the temperature at least twice a day, especially during shedding and molting periods, which can be more sensitive to temperature changes.
What if my gecko is not shedding properly?
Ensure the humidity is within the range of 40–60% and provide a humid hide with damp substrate. If the problem persists, consult a veterinarian.
Can I use a heat mat instead of a heat lamp?
Yes, a heat mat can be used as long as it's placed under the enclosure and the temperature is monitored at the gecko's level. The heat mat should be set to maintain a warm side of 88–92°F (31–33°C).
Not veterinary advice. This guide covers husbandry — housing, feeding, cleaning and handling. If your leopard gecko is injured, off food unusually long, or behaving abnormally, contact a veterinarian.