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@GrapeApe

Any time I get rooked on a issue. I usually find the answer I like in Cornell University Study

which study, Ape? I see there is a Cornell CU Structural Soil for landscaping…i think there’s a very old soil study you may be referring to?

??

Horticulture Research Videos ala Cornell

Cornell has published a variety of interesting research “posterboards” on YouTube. General horticulture topics (if you enjoy the science and experimentation aspects of growth). Tessa Pocock: Light Matters - Sensing and Signaling in Plants Suggests spectral phase for PWM driven LEDs matters. E.g. having out-of-phase LEDs across the action spectra reduces growth (contributing DLI does not change). Suggests that differences in spectral peaks between LED vendors makes a difference (36nm differenc…

thanks