Hortilux Super HPS Enhanced Spectrum grow lamps fine-tune your lighting system to provide optimum spectral energy levels that promote vigorous plant growth. The Eye Super HPS EN Grow Lamps provide 17% more total energy and 25% more energy in the violet, blue, and green spectrum than standard high pressure sodium lamps. These lamps are environmentally friendly and pass EPA TCLP test criteria as non-hazardous waste.