Sylvania Gro-Lux 600W 230V E40 LampSylvania Gro Lux 600W 230V E40 Lamp Fast growth and big yields with Sylvania Gro Lux 600W 230V E40 Lamps. Sylvania Gro Lux high efficiency HPS lamps promote fast, healthy growth across the canopy. They are suitable for use as complete or additional grow lighting in greenhouses and grow rooms. With a 90,000 luminous flux, the patented arc tube ensures high photosynthetic efficiency by distributing large quantities of optimised light. They deliver 600W