Monthly Archives: May 2022

A healthy basking spot in the terrarium is the heart of every species-appropriate reptile habitat. Modern UVB metal halide lamps (HID lamps) offer a particularly effective combination of light, heat, and UVB radiation – perfect for all reptiles. But proper installation is essential!
In this guide, we’ll show you step-by-step what you need to consider – from lamp positioning to the electronic ballast (EB).

Choosing the right UVB lamp
Metal halide lamps come in different wattages (e.g. 35 W, 50 W, 70 W, 100W, 150W). The choice depends on:
• Species (e.g. desert vs. tropical)
• Animal size (juvenile vs. adult)
• Climate of origin
The higher the UV requirement and the larger the terrarium, the higher the wattage should be. For specific lamp recommendations per species, check our Reptiles Expert Matrix or our dedicated blog articles here.

Optimal distance to the basking spot
The distance between the lamp and the basking spot is crucial for effective UVB exposure: see Reptiles Expert Matrix...

UVB for Chinese Water Dragons (Physignathus cocincinus)

The right UVB lighting for healthy and active reptiles

The Chinese Water Dragon (Physignathus cocincinus) is a striking, diurnal lizard native to the tropical forests of Southeast Asia. Known for its vibrant green coloration and active behavior, this species has become a favorite among reptile enthusiasts. To keep your water dragon healthy and thriving, providing the correct lighting—especially UVB—is essential.

Why UVB lighting is so important

Like many reptiles, water dragons rely on UVB rays to synthesize vitamin D3, which is necessary for calcium absorption. Without it, they risk developing serious health issues like metabolic bone disease (MBD), muscle weakness, or growth disorders.

UV metal halide lamps – the best choice

Water dragons are very active and need lighting that covers both vertical and horizontal areas of their enclosure. UV metal halide lamps are ideal because they combine UVB, UVA, visible light, and heat in...

UVB for Fiji Iguanas (Brachylophus spp.)

UVB light for vibrant and healthy rainforest dwellers

Fiji iguanas (Brachylophus vitiensis, Brachylophus fasciatus, and others) are among the most striking lizards in the terrarium hobby. Their bright green coloration with turquoise or yellow accents makes them true tropical jewels. Native to the islands of Fiji and surrounding Pacific regions, they are diurnal tree-dwellers and require well-planned terrarium lighting—especially in terms of UVB radiation.

Why UVB is essential for Fiji iguanas

Like many diurnal reptiles, Fiji iguanas depend on natural sunlight to synthesize vitamin D3. This vitamin is crucial for calcium absorption, which in turn supports strong bones, healthy muscles, and immune function. Without sufficient UVB, these lizards can suffer from serious deficiencies like metabolic bone disease or developmental issues.

The ideal light source: UV metal halide lamps

Because Fiji iguanas are active climbers, lighting must be effective...