Metal-halide lamps (e.g. JBL L-U-W or HQI) require a special ballast for the respective wattage for operation. JBL offers installation kits for 35, 50 and 70 W.
Nature as a model
Terrarium animals are cold-blooded animals, which are strongly dependent on light, particularly on the quality and intensity of the light. Activity, food intake, digestion or rest phases are influenced by the change of day and night and the intensity of light. Depending on the light source, there are differences in output and quality of the light.