Reptile Systems T5 UVB Lamp Ferguson Zone 4

The Reptile Systems Zone 4 T5 is a high-output UVB lamp designed for reptiles with demanding UV requirements. Built for use with a compatible T5 electronic ballast or luminaire, it delivers serious UVB and UVA output in a format that integrates cleanly into a vivarium or terrarium setup. Available in a range of sizes to suit enclosures of different scales.

UVB and UVA Output

Zone 4 is rated for extra high UVB output, producing over 12% UVB to support the synthesis of vitamin D3 — essential for calcium metabolism and long-term health in high UV-demanding species. It also emits 30% UVA, which plays a key role in natural behaviour, appetite, and how reptiles perceive their environment.

Colour Rendering

Alongside its UV performance, the Zone 4 produces excellent natural colours, making it easier to observe your animals accurately and giving the enclosure a clean, naturalistic appearance.

Compatibility and Use

This lamp requires a T5 electronic ballast to operate — it will not run on older magnetic or T8 control gear. For best results, pair it with a dedicated T5 luminaire or electronic controller. To maintain consistent UV output, replace the lamp after twelve months of normal use, even if it remains visibly lit.

Choosing the Right Size

The Zone 4 T5 is available in multiple lengths, making it straightforward to match the lamp to your enclosure. Select the size that best fits the length of your vivarium to ensure even UV distribution across the basking zone.

For keepers housing desert species, high-altitude lizards, or any reptile with elevated UV requirements, the Zone 4 T5 is a dependable, well-specified choice that covers all the fundamentals without compromise.