Do Bearded Dragons Need Special Lighting?
Bearded dragons are desert reptiles that thrive in warm, sunny environments in the wild. When we bring them into our homes, it’s our responsibility to recreate that environment as closely as possible—and that’s where lighting becomes super important.
But what kind of lighting do they really need? And why is it considered “special”? Let’s break it down.
💡 Why Lighting Is Crucial for Bearded Dragons
Unlike mammals, reptiles rely on external heat and light to regulate their body temperature and perform essential body functions. Bearded dragons need two types of lighting:
- UVB Lighting
- Basking (Heat) Lighting
These aren’t just “nice to have”—they’re essential for their survival in captivity.
☀️ What Is UVB Lighting and Why Do They Need It?
UVB light is a specific type of ultraviolet light that helps bearded dragons produce vitamin D3, which in turn helps them absorb calcium.
Without UVB, a dragon’s body can’t process calcium properly, leading to a serious condition called Metabolic Bone Disease (MBD). This disease causes weak bones, deformities, and even death if left untreated.
Signs of UVB Deficiency:
- Lethargy
- Swollen limbs
- Soft jaw or spine
- Loss of appetite
- Twitching or tremors
So yes—UVB lighting isn’t optional. It’s a must.
🔥 The Role of Basking Light
In the wild, bearded dragons bask in the hot sun to warm up and digest their food. In captivity, a basking bulb mimics this sun exposure by producing heat and bright white light.
Ideal Temperatures:
- Basking spot: 95°F–110°F (around 40°C for adults)
- Cool side of the tank: 75°F–85°F
- Night time: Can drop to 65°F–75°F (no light needed at night)
Without proper heat, your beardie won’t be able to digest food, stay active, or regulate their metabolism.
🕰️ How Long Should Lights Stay On?
A bearded dragon’s lighting schedule should mimic natural daylight. Here’s what’s recommended:
- 12 to 14 hours of UVB and heat light during the day
- 10 to 12 hours of complete darkness at night (no lights!)
Using a timer can make this easy and consistent.
🛒 What Type of Bulbs Should You Use?
For UVB:
- Use a fluorescent tube (T5 is better than T8) or a mercury vapor bulb
- Look for bulbs labeled 10.0 UVB or desert strength
- Replace UVB bulbs every 6–12 months, even if they still light up—UVB weakens over time
For Basking:
- Use a halogen or incandescent bulb designed for reptiles
- Make sure it creates a focused hotspot
- Use a thermometer to ensure proper temps
❌ What to Avoid
- Colored bulbs (red, blue, etc.): These can disturb your dragon’s natural behavior and sleep.
- Cheap, generic bulbs: They often don’t provide reliable UVB or safe heat.
- Glass or mesh covers: These can block UVB rays—mount bulbs directly inside the tank when possible.
📍 Where to Place the Lights
- UVB tube should run across at least 2/3 of the tank length, ideally mounted inside.
- Basking light should be placed on one side to create a temperature gradient—hot on one end, cooler on the other.
- The basking spot should be about 8–12 inches from the UVB light for best exposure.
👨⚕️ What Happens Without Proper Lighting?
If bearded dragons don’t receive the right lighting:
- Their bones become weak and deformed (MBD)
- They stop eating and become lethargic
- They may suffer organ failure over time
In short: Poor lighting = Poor health.
✅ Final Thoughts: Yes, They Absolutely Need Special Lighting
So, do bearded dragons need special lighting?
Yes—without a doubt.
UVB and basking lights are not just accessories; they are lifelines. With the right lighting setup, your bearded dragon will thrive, grow strong, and live a long, healthy life.
If you’re a beginner, this might sound like a lot—but once it’s set up, it’s easy to maintain. And the reward of seeing your beardie healthy and happy? Totally worth it.
