Best UVB Lamps for Reptiles 2026

UVB is essential for reptile calcium metabolism. Choose the right output for your species.

UVB Output Selection Guide - **5.0 (Low)**: Forest-dwelling species (Crested Gecko, etc.) - **10.0 (Medium)**: Desert-dwelling species (Leopard Gecko, Bearded Dragon, etc.) - **12.0/14.0 (High)**: Large tortoises, iguanas, etc.

Top 5 Picks

1. Zoo Med ReptiSun T5 HO 10.0 The definitive classic. Fluorescent tube type with long UVB irradiation distance. Replace every 6 months recommended.

2. Arcadia D3+ T5 (12%) European heritage brand. High output ideal for large enclosures. Popular with professional breeders.

3. GEX Exo Terra Reptile UVB 150 Compact fluorescent type. Easy to install in small enclosures. However, coverage area is limited.

4. Vivaria Taiyo NEO (26W) Affordable pricing. Full spectrum including visible light. For small to medium enclosures.

5. Solarium UV 70W (Metal Halide) Metal halide lamp. Natural ratio of UVA+UVB irradiation. Expensive but closest to natural sunlight.

Important Notes - UVB does not pass through glass or plastic — irradiate from above a mesh lid - UVB output drops drastically past replacement date — replace even if the bulb still appears to work