315w CDM 930 3000k flower bulb Philips Elite Agro 315w T12 Ceramic Metal Halide Lamp 3100k is a flowering, budding spectrum lamp designed for maximum efficiency. Philips Elite Agro 315w T12 Lamp provides a compact and efficient metal halide solution for the horticulture market. This lamp, combined with the efficient ballast, provides outstanding growth light performance over the life of the product. Superior colour quality. Crisp white light. Incredibly high 1.95 PPF (photosynthetic photon flux) per watt per second light source. 3100k colour temperature. High 92 CRI. 33,000 initial lumen’s (105Lm/w). High 90% lumen maintenance at 8,000 hr. High 85% PPF maintenance at 20,000hr. Unique Open Rated Lamp construction reduces radiant heat from the arc tube and is suitable for open fixture use.