theslipperbandit
Well-Known Member
PAR stands for photosynthetically activate rediation it's exactly what the plant clorophills crave like crack so no you were incorrect PAR HAS EVERYTHING TO DO WITH PLANT GROWTHso can lumens. it just doesn't mean anything to plants.plants see light differently than we do. compare the SPD of your light to the measured absorption spectrum of cannabis plants. if you did your research as you instructing others to do then you would know what plants use this spectrum thats missing from COBs for.you could learn a lot from experienced growers here