Sunmaster dual spectrum grow bulb
Sunmaster Dual Spectrum high pressure sodium grow bulb. Sunmaster lamps are proven everyday in commercial greenhouse and hydroponics use. The new Sunmaster Dual Spectrum lamp is a radically new, scientifically-developed lamp developed to deliver exactly the right light frequency to your plants at the crucial stages in their development. Dual Spectrum lamps offer superior lamp performance and are fully compatible with existing fittings and ballasts to deliver exactly the right light frequency to your plants at the stages in their development.