Exo Terra TerraSky UVB LED Terrarium Bulb ES - PT2425

The ET TerraSky UVB LED Terrarium Bulb ES is a compact, energy-efficient UV light source designed for reptile terrariums. Combining UVB, UVA, and 6500K visible light LEDs in a single unit, it delivers a broad-spectrum output suited to a range of species and enclosure sizes. The Edison Screw (ES) fitting and horizontal orientation make it a practical choice for keepers who want reliable, measurable UV without the running costs or replacement frequency of fluorescent tubes.

UVA and UVB Output

UVB output supports vitamin D3 photosynthesis, aiding calcium absorption and helping to prevent metabolic bone disease. UVA plays an equally important role — stimulating natural feeding responses, activity levels, and reproductive behaviour, while also reducing stress. The combination of both wavelengths alongside visible daylight spectrum light means this bulb contributes to both the physical health and behavioural wellbeing of your animals.

UVI Levels by Distance

• 0–15 cm: 9 UVI
• 15–18 cm: 6 UVI
• 18–25 cm: 3–5 UVI
• 25–45 cm: 1–2 UVI

Coverage and Beam Angle

The wide beam angle and horizontal lamp orientation mean UV is distributed across a broader floor area rather than concentrated in a single spot, giving reptiles more freedom to self-regulate their UV exposure. The bulb base rotates through 300°, allowing you to direct the beam precisely where it is needed within the enclosure. Compact dimensions mean it is usable in smaller terrariums where larger UV fixtures would be impractical.

LED Lifespan

The LED chips are rated for up to 20,000 hours of use — equivalent to four or more years of regular operation. This significantly reduces the frequency of replacements compared to traditional UVB fluorescent lamps, and means output remains consistent over an extended service life.

For keepers who want a measurable, multi-species UV solution with a long service life and flexible positioning, the ET TerraSky UVB LED Terrarium Bulb ES is a well-specified, straightforward choice.