Reptile UV Light Complete Guide — UVA vs UVB Differences & Species-Specific Selection
Complete guide to reptile UV lighting: UVA vs UVB differences, species-specific requirements, lamp types, installation methods, and replacement schedules.

Key Takeaways
Complete guide to reptile UV lighting: UVA vs UVB differences, species-specific requirements, lamp types, installation methods, and replacement schedules.
Related Species
Proper UVB lighting is critical for reptile health, supporting calcium absorption, behavior, and vitamin D synthesis. Selecting appropriate UVB products, understanding spectrum requirements, and establishing proper lighting schedules prevents serious metabolic diseases. This guide covers comprehensive UVB lighting knowledge.
Why UVB Lighting Matters
UVB functions: - Enables vitamin D3 synthesis in skin - Vitamin D3 essential for calcium absorption - Supports natural behavior patterns - Helps establish circadian rhythms - Promotes immune system function
Without proper UVB: - Calcium absorption impaired - Metabolic bone disease develops - Behavioral abnormalities - Weakened immune function - Vitamin D deficiency conditions
Understanding UV Spectrum
UVA (315-400nm): - Visible purple light - Supports vision and behavior - Less critical than UVB - Present in many bulbs - Helps with activity levels
UVB (280-315nm): - Critical for vitamin D3 synthesis - Most important for reptile health - Varies in intensity and spectrum - Proper spectrum varies by reptile - Output decreases with bulb age
Light intensity: - Measured in UVB percentage output - Distance from animal affects exposure - Varies by enclosure setup - Some species need higher intensity - Too much can cause issues
Types of UVB Bulbs
Fluorescent tubes: - Traditional and widely available - Moderate cost - Various spectrum outputs (5.0%, 10.0% etc.) - Linear coverage of enclosure - Require proper ballast fixture
Compact fluorescent bulbs: - Smaller footprint - Higher intensity in smaller area - Some controversy about safety - Potential for eye/skin issues if too close - Good for smaller enclosures
LED UVB bulbs: - Newer technology - Energy-efficient - Long lifespan - Variable spectrum availability - Cost-effective long-term
Mercury vapor bulbs: - Intense heat and light - Combined UVB and heat - Suitable for large enclosures - Significant cost - Require careful temperature management



