Reptile Systems Zone 1 T5 UVB Lamp

The Reptile Systems Zone 1 T5 UVB lamp is designed for reptiles and amphibians that inhabit low-UV environments in the wild. Producing 2.4% UVB and 30% UVA, it supports natural vitamin D3 synthesis without overexposing animals that have evolved in shaded or lightly dappled conditions. Available in four sizes to suit vivaria of different scales, from compact desktop terrariums to larger species enclosures.

Ferguson Zone 1 — Who This Lamp Is For

Ferguson Zones are a scientifically recognised framework for categorising a species' natural UV exposure based on their behaviour and habitat. Zone 1 covers crepuscular or shade-dwelling species — animals that rarely bask directly in sunlight. Matching your lighting to the correct zone is one of the most important steps in replicating a biologically appropriate environment.

UVB and UVA Output

• 2.4% UVB — supports vitamin D3 synthesis at levels appropriate for low-UV species
• 30% UVA — promotes natural behaviour, activity, and appetite
• Extra high output T5 format delivers consistent UV across the enclosure
• Produces excellent, natural colour rendering for both the animals and any live planting

Compatibility and Installation

This lamp requires a T5 electronic ballast to operate — it will not function with older magnetic ballast fittings. For best results, use it with a dedicated T5 luminaire or an appropriate electronic controller. As with all UVB lamps, UV output degrades over time even when the lamp still produces visible light; Reptile Systems recommend replacement after one year of normal use.

Choosing the Right Size

The Zone 1 T5 range is available in four sizes, making it straightforward to select a lamp that spans the majority of your enclosure's length for even UV distribution. Select your preferred size from the variant options above to suit your specific setup.

For keepers who take species-appropriate husbandry seriously, matching the correct Ferguson Zone lamp to their animal's natural UV index is a straightforward way to improve long-term welfare. The Reptile Systems Zone 1 T5 range makes that easy across a variety of enclosure sizes.