Exo Terra Reptile UVB100 T5 VHO 39W 34" Fluorescent Tube | PT2382

The ET Reptile UVB100 T5 VHO is a 39W, 34-inch Very High Output fluorescent tube manufactured in Germany, designed specifically for reptiles, amphibians, and invertebrates living in the cryptophotic zone — the dimly lit, shaded environments occupied by shade-dwelling and crepuscular species. If you keep animals that avoid direct sunlight yet still require carefully calibrated UV exposure, this tube is built around their biology.

Built for Shade Dwellers

Cryptophotic species — those adapted to nocturnal and crepuscular activity — experience UV indirectly, through filtered light and brief periods of concealed basking. Their UV requirements are real but nuanced. This tube delivers appropriate UVA and UVB levels for animals with an aversion to intense solar exposure, replicating the conditions of their natural environment without overwhelming them.

UVB That Works

• Produces UVA and UVB output that exceeds standard T8 tubes and energy-efficient alternatives
• Unique phosphor blend replicates the solar UVB spectrum
• Enhanced UVB penetration makes it suitable for taller vivariums or those fitted with denser mesh screens
• Supports healthy Vitamin D3 synthesis, which in turn drives calcium absorption and helps protect against Metabolic Bone Disease
• UVA output supports appetite, activity levels, and reproductive behaviour
• UV output rated for 12+ months of lasting performance

Visible Spectrum and Light Quality

Beyond UV, the tube produces a well-balanced visible light spectrum that complements its UVA and UVB output. Light intensity and UV exposure will vary depending on the distance between the tube and the basking or resting area, so positioning within the vivarium should be considered carefully for each species.

Specifications

• Wattage: 39W
• Length: 34 inches
• Output type: Very High Output (VHO) T5
• Product code: PT2382
• Manufactured in Germany
• Recommended for use with a compatible T5 terrarium canopy

For keepers housing shade-adapted species who need reliable, biologically appropriate UV without guesswork, the ET Reptile UVB100 T5 VHO 39W delivers consistent output and genuine longevity in a format built for modern T5 setups.