Exo Terra TerraSky UVB LED Terrarium Bulb 9w

The Exo Terra TerraSky UVB LED Terrarium Bulb (PT2425) is a compact, energy-efficient UV light source designed for terrariums, combining UVB, UVA, and 6500K visible light LEDs in a single unit. Its horizontal orientation and wide beam angle make it suited to a range of species and enclosure setups, from smaller builds to larger vivarium layouts.

UVA and UVB Output

The TerraSky delivers a broad spectrum of UV, covering both UVA and UVB wavelengths. UVA supports appetite, activity, and reproductive behaviour, while also reducing stress and contributing to general well-being. UVB enables vitamin D3 photosynthesis, which is essential for calcium absorption and the prevention of metabolic bone disease.

UVI Levels by Distance

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

Beam Angle and Lamp Orientation

The horizontal mounting orientation, combined with the wide beam angle, means UV coverage is spread across a larger surface area rather than concentrated in a single spot. The lamp base rotates through 300°, allowing the keeper to direct the UV beam precisely where it is needed within the enclosure.

LED Longevity

The TerraSky uses durable LED chips rated for up to 20,000 hours of use — equivalent to over four years of operation. This significantly reduces the frequency of bulb replacement compared to traditional fluorescent UV tubes.

For keepers who want reliable, measurable UV output with the convenience of LED technology, the Exo Terra TerraSky UVB LED Terrarium Bulb PT2425 is a straightforward and well-specified choice for a wide range of reptile and exotic species setups.