Talk to me about UVA and B, Reds and who is Emmerson anyway?

I asked @Baudelaire of SolStrips about this and his comments were that the Emmerson effect does NOT do much for increasing total yield. However, it does improve quality a good bit, plus it speeds up flowering - which amounts to a slight increase in yield over time if you can squeeze in more grows in a year. Im not clear on how much it speeds up flowering, but it didnt sound like anything dramatic.

and

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