Excellent explanation, DrDawg.
I had to learn the light spectrums/wavelengths some years back when I was choosing which kind of grow light system I wanted to buy. (Depending on what you want your plants to do, bloom or grow vegetation only is a factor in which kind of light I needed, and which offer mostly red or mostly blue.) Your explanation is something I'll *star for future reference.
JoycalynAnnSkinner, WELCOME to ATP! Hope to see you around the site.
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