PHILIPS - GREENPOWER 1000W 400V EL - DOUBLE ENDEDPhilips GreenPower is a very high quality HPS high pressure sodium lamp, usable with E Papillon systems. Its peculiarity is the Agro spectrum which makes it excellent not only during the flowering phases, but also in vegetative phase, being able to keep the internodal distance short throughout the life of the plant. This bulb combines a small part of the blue light spectrum with the classic warm yellow flowering spectrum. Thanks to the high quality of