Reptile Systems Mercury Vapor

The Reptile Systems D3 UV Basking Lamp Nano is a mercury vapour lamp designed to deliver UVB, UVA, visible light, and infrared heat from a single bulb — no external ballast required. Available in a range of wattages to suit enclosures of different scale, it is a practical choice for keepers who want a single-source solution for both lighting and thermoregulation in their vivarium.

What It Does

Mercury vapour lamps combine the functions of a UV source and a basking lamp in one unit. This means your reptile receives the full spectrum of light energy — UVA for behavioural stimulation, UVB to aid vitamin D3 synthesis, and infrared heat to support thermoregulation — all from a single fitting. This approach reduces wiring complexity and is well suited to species with high UV requirements.

Health and Biological Benefits

• Supports vitamin D3 synthesis, which is essential for calcium absorption and skeletal health
• Helps prevent metabolic bone disease in reptiles with higher UV demands
• UVA output supports natural behaviour and can stimulate reproduction
• Contributes to the animal's overall physiological development and long-term wellbeing

Technical Specifications

• Delivers UVB, UVA, visible light, and infrared (heat) energy from a single lamp
• 35-degree beam angle for a focused but wide basking zone
• Average rated lamp life of 3,000 hours
• Self-ballasted — no external ballast unit needed
• UVI output: 2.7, measured at 30cm without a reflector after 6 months of use

Quality Assurance

Every lamp in the Reptile Systems range passes through a triple quality check process to verify that UVI output meets the standard stated on the packaging. Reptile Systems is the only reptile lighting brand to display measured UVI output on all product packaging — a level of transparency that gives keepers confidence in what their animals are actually receiving.

Choose the wattage that best matches your enclosure size and the basking distance required for your species. The range covers setups from compact nano terrariums through to larger vivaria, so there is an option suited to most keeper configurations.

• Free delivery to UK mainland addresses on orders over £79.
• In-stock items ordered before 12pm Monday to Friday usually ship the same day.
• Standard vivariums go free next working day; the largest sizes travel by pallet.
• Live animals and custom vivariums have a £50 delivery charge. Custom vivariums take approximately 2 to 4 weeks to build.

Delivery policy30 day returns