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Red Sunrise Grow Lamps emit balanced light similar to a 3,200°K source, making them ideal for all phases of plant growth while ensuring more natural growth patterns occur in most species. Its enhanced orange-red component promotes flowering, stem elongation and germination while a rich blue content assures healthy vegetative growth. Sunmaster® Red Sunrise Metal Halide Lamps surpass all other HID sources in PAR watts - the most objective measurement of total light energy available for photosynthesis. Designed for optimal performance on electronic ballasts.