These specialized Eye Hortilux Super HPS bulbs provides 25% more energy
in the violet, blue and green lighting spectrum than traditional HPS
bulbs. The combination of Super HPS and the Metal Ace conversion lamp
provides the optimal lighting spectrum levels through each stage of
plant life. The "EN" designation means this bulb is certifiably
environmentally friendly in that it passes EPA and TCLP test criteria as
non-hazardous waste.