Exo Terra Reptile UVB200 T5 VHO 24W 22" Vivarium UV Tube | PT2427

The ET Reptile UVB200 T5 VHO is a 24W, 22-inch Very High Output fluorescent tube designed for reptiles that occupy the Mesophotic Zone — species that bask occasionally or in partial, dappled sunlight rather than direct, intense exposure. Manufactured in Germany to a high quality standard, it delivers a rated UV output lifespan of 12 months or more, making it a reliable choice for keepers who need consistent, measurable UVB without frequent replacements.

Designed for Mesophotic Zone Species

Reptiles from partially shaded environments have evolved to regulate both body temperature and UVB intake through adaptive basking behaviour — moving in and out of light to meet metabolic needs while avoiding overheating. This tube replicates the specific combination of UVA and UVB present in those conditions, supporting natural behaviour rather than overwhelming animals that are not adapted to intense, desert-level UV exposure. The intensity of UV output varies with distance from the tube, allowing keepers to create a gradient across the vivarium.

UVB, Vitamin D3 and Calcium Metabolism

Sufficient UVB exposure drives Vitamin D3 synthesis in the skin, which in turn enables effective calcium absorption from food. Without adequate UVB, reptiles — particularly those with higher calcium demands — are at significant risk of Metabolic Bone Disease. This tube's VHO output surpasses that of standard T8 fluorescent bulbs and compact energy-saving alternatives, providing the UVB intensity needed to support healthy skeletal development and long-term physiological wellbeing.

Superior Penetration for Taller Setups

The Very High Output rating means UVB penetrates further from the tube than standard T5 or T8 equivalents, making this tube well suited to taller terrariums or enclosures fitted with mesh or screen tops that would otherwise absorb a significant proportion of UV before it reaches the animal. Keepers using dense or double-layered screens will benefit particularly from the increased output.

Phosphor Blend and Full Spectral Output

• Unique phosphor blend formulated to replicate the solar UVB spectrum
• Emits both UVA and UVB; UVA supports appetite, activity levels and reproductive behaviour
• Balanced visible light spectrum alongside UV output
• Rated for 12+ months of lasting UV performance
• 24W, 22-inch T5 VHO format — confirm fitting and controller compatibility before purchase

For keepers housing crepuscular, nocturnal, or partially shade-dwelling species that still require structured UV access, the ET Reptile UVB200 T5 VHO 24W provides the spectral output and penetration depth to support their animals properly without the guesswork.