SolarMax lamps are specifically designed for sophisticated horticultural applications. ISO certified engineering and manufacturing processes ensure high quality and optimized performance. We are very excited about the 1000 watt High Pressure Sodium conversion bulb that is now a true 1000 watt bulb. The bulb has reduced glass to fit into today's compact super-efficient reflectors. SolarMax has a 600 watt Metal Halide tubular conversion bulb with an enhanced daylight spectrum. They also have a true high output 1000 watt High Pressure Sodium bulb and a tubular 1000 watt Metal Halide daylight lamp. All Metal Halide bulbs have a kelvin rating of 7200º. SolarMax Gold are similar to a 3000º. Kelvin light source, these lamps are excellent for fruiting/flowering applications and because they are Metal Halides lamps they have enough full spectrum energy for all a plants needs from 380 to 760 nanometers. Produces 32,000 Lumens. METAL HALIDE BULBS.