Philips Green Power Master Color CDM Lamp 315 Watt
Philips 315W CMH lamps are pretty much the industry standard 315W CMH, or CDM, lamps for growing plants. Other 315W CMH/CDM lamps are available but emit quite different spectrums, they are not as effective for plant growth. They come in two different models, MasterColour 942 Daylight & GreenPower 930 Agro – both models can be run by the Gavita CMH 315e or 630w systems . They both emit a type of light that is very close to actual sunlight, and plants generally thrive under their light.