(HPS+Metal Halide) Cool
Sunmaster's COOL grow lamps were developed to drive strong vegetative growth. For indoor growing operations requiring 100% artificial lighting, Sunmaster COOL lamps lead the industry with regard to total µmol output in specific spectral ranges to promote strong vegetative growth.
University and 3rd party tested, approximately 50% of the spectral energy of Sunmaster's COOL lamps are found in the blue/violet range between 380nm and 495nm. Partner Sunmaster's COOL lamps with 'SUPER' lamps for the flowering period of the plant growth cycle and ‘FINISH‘ lamps at the end of the plant growth cycle in order to maximize yield.