CULTILITE - CMH BULB 315W - 4200?KCultilite CMH 315W 4200 ? K They are lamps of the highest quality CMH (Ceramic Metal Halide) characterized by a much more complete PAR spectrum than that of traditional HPS, they are in fact comparable to the spectrum of sunlight. The complete PAR spectrum with a higher thrust on the blue of the CMH 315W 4200? K guarantees a better and more compact development during the vegetative phase of the plants; they are comparable to plasma bulbs but with a