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Turn on the Light! How to Choose the Right Heat and UVB Bulb for Your Reptile


reptile care

Reptiles are fascinating creatures that come in all shapes and sizes. Whether you own a bearded dragon, a chameleon, a turtle or some other cold-blooded exotic pet, providing the right heating and lighting conditions is essential for their health and wellbeing. In this article, we'll discuss how to choose the right heat bulb and UVB bulb for your pet reptile, and why these elements are so important.



How to Choose the Right Heat Bulb for Your Pet Reptile


Reptiles are cold-blooded, which means they rely on their environment to regulate their body temperature. Unlike mammals, reptiles cannot produce their own body heat, so it's important to provide them with a heat source that mimics the sun's warmth. This is where a heat bulb comes in.


There are several types of heat bulbs to choose from, including ceramic heat emitters, incandescent bulbs and halogen bulbs. The best type of bulb for your pet will depend on the species of reptile you own and the temperature requirements of their natural habitat. For example, desert-dwelling reptiles like bearded dragons enjoy 90-100°F, leopard geckos require a basking spot of 88-90°F, and rainforest species such as iguanas prefer a temperature gradient of 75-105F depending on time of day. The basking area should always have a shady spot for reptiles to be able to retreat to. The wattage of your heat bulb should be determined based on the species of reptile you have and the size of your tank. All heat bulbs should be placed at an appropriate height to prevent burning and provide the correct temperature. This is also dependent on the size of your tank.


In addition to the basking spot temperature, you'll also need to provide a cooler area in the enclosure for your pet to retreat to when they need to cool down. This is where a thermostat comes in handy, as it can help you regulate the temperature in the enclosure and prevent overheating.


Get more pro tips in our extensive reptile care guides.



What Light Does My Pet Reptile Need?


In addition to a heat source, many reptiles also require UVB lighting. UVB is a type of ultraviolet light that reptiles need to synthesize vitamin D3, which is essential for bone health. Without adequate UVB, reptiles can develop metabolic bone disease, which can be fatal.


When choosing a UVB bulb, it's important to consider the distance between the bulb and your pet, the height of the tank, and as well as the age and species of your reptile. UVB bulbs need to be replaced every 6 months, even if they still appear to be working. It is helpful to purchase a UVB meter to monitor the strength of the bulb and ensure the level is within the correct zone that corresponds with your species of reptile. There are many different strengths and types of UVB bulbs. Refer to our UVB handout to ensure you purchase the right one.


uvb bulb guide


How Do I Keep My Reptile Warm?


In addition to providing a heat bulb and UVB lighting, there are several other ways to keep your pet reptile warm and comfortable. These include:


  • Using a heat mat: Some reptiles, such as snakes and lizards, benefit from an under-tank heat mat (when used correctly). This can provide a gentle heat source that can help maintain a consistent temperature in the enclosure. A thermometer should be measuring the heat mat temperature at all times to prevent the reptile from being burned.

  • Providing hiding spots: Reptiles like to feel secure, so it's important to provide them with warm hiding spots like caves or plants where they can retreat when they feel stressed.

  • Using a substrate: The substrate you use in your pet's enclosure can also affect their comfort level. Some substrates, like reptile carpet or tile, can help regulate temperature and humidity, while others, like sand, dirt, or coconut husk, can cause impaction if ingested and lead to development of respiratory disease.


Providing the right heat and lighting conditions for your pet reptile is essential for their health and wellbeing. By choosing the right heat bulb and UVB bulb for your pet, as well as using a thermostat, providing hiding spots and using the right substrate, you can help ensure that your pet is happy and healthy for years to come.


Want more information specific to your pet?

Check out our reptile pet guides to see exactly what temperatures and environments are best for your cold-blooded friend.

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