Artificial Grow Lights: Selecting Your Light (CFL, T8, T5, HPS, MH, CMH or LED) -AlboPepper.com
HPS vs LED Grow Lights: The Spectrum Efficiency Showdown – The Green Sunshine Company
HPS vs LED Grow Lights: The Spectrum Efficiency Showdown – The Green Sunshine Company
Best Grow Lights 2021: LED Vs HPS Comparison
Why LED? - Grow Lights Australia
LED lighting increases the ecological impact of light pollution irrespective of color temperature - Pawson - 2014 - Ecological Applications - Wiley Online Library