The Philips GreenPower CDM Lamp 315W Elite Agro 3100K provides high-quality, stable lighting designed for professional horticultural environments. This ceramic metal halide (CDM) lamp works by passing an electric current through vaporized metal salts in a ceramic arc tube, producing a consistent, full-spectrum light that supports healthy plant growth. With a 3100K color temperature, i... https://www.hydroponicstown.com/790998-philips-greenpower-cdm-lamp-315-watt-elite-agro-3100k