The purpose of this case study was to compare the difference between cannabis plant characteristics grown using the Nate Controls L2 grow light vs. a major brand single‐ended 1000W HPS grow light. Plants grown using L2 for the flowering phase had a 15% increase in dried trim weight and a 9% increase in cannabinoid concentration compared to those grown using HPS.
The selection of light source is important because light is the single most important factor on plant growth. No other environmental parameter has as strong an influence. The rate of photosynthesis is driven by the quantity of photons with wavelengths between 400 and 700nm. This document gives detailed information on various grow light sources.