Want to give your plants the best possible start in life? Throw some light onto the subject with the new Sunmaster lamp range. These Dual spectrum lamps produce more red and blue light than a standard HPS lamp. This generates higher chlorophyll levels for plants that are greener and healthier. They also promote a larger leaf area and mass and inhibit unnatural stem elongation. Other benefits include the encouraging of internodes, thicker primary stems and earlier flowering. These dual spectrum lamps provide red and blue light at just the right levels for optimum results, with an output of 90000 lumens. Available as 250w, 400w, 600w and 1000w units.