Dual Spectrum are 20% Blue and 80% Red. Sylvania have made the Grolux to the same standards for years and it remains the reference dual spectrum lamp for the entire lighting industry. GroLux HPS grow lamps with patented arc tube delivers the highest photosynthetic efficiency.
Performance kept at an exceptional level due to improved structure of the outer bulb. Optimised for the highest Phyto lumens or PAR output. Industry leading lumen maintenance of 95% at the end of life.
For use as complete or additional artificial lighting of plants. Recommended for use in greenhouses and indoor lighting If you want to grow and flower under the same lamp then choose Sylvania Grolux HPS!
Also, we do suggest you change your bulbs every 9 months, (three grows) as the illumination decreases. Due to the sheer intensity of HPS lamps you’ll often find yourself coming away blurry eyed after tending to your plants..... We highly recommend protecting your eyes with these LUMII GROW ROOM LENSES.
PLEASE NOTE THAT THESE BULBS NEED A BALLAST TO RUN THEM !!
