CMH lamps are full spectrum “white” light. MH lamps are predominantly blue spectrum focused and HPS lamps are red/yellow focused whereas CMH lamp technology is broad spectrum based. A CMH lamp has 2.5 times the blue light of an HPS lamp. The 13.4% blue light from CMH lamps are slightly higher than a 50/50 mix of HPS and MH lamps. A CMH lamp has a more uniform spectral output than any other lamp used for plant growth lighting, with a CRI (Colour Rendering Index) of 85-95 which closely resembles natural sunlight. Most grow lights produce little to no UV light. CMH lamps emit just the right amount of UV rays which are produced naturally by the sun, UV-B being the most beneficial to plant Trichome, Flavonoid and Terpene production as well as an increase in resistance to disease. This is due to the natural stress responses and defense mechanisms that plants have to UV rays. We offer CMH lamps in color temperatures of both 3K (3200K) and 4K (4200K) models. CMH lamps are suitable for cloning, flowering and vegetative growth and are a must have in all indoor plant cultivation setups.