2:24 Light as one of the nine cardinal parameters
4:04 Can too much light cause problems with my cannabis plants?
5:30 How far should my lights be above my cannabis plants?
9:30 What is the optimum light intensity for growing cannabis?
16:59 PAR and PPFD explained
19:30 The best DLI (Daily Light Integral) for Cannabis
24:25 The proper tools to measure light levels
26:40 DLI levels for seedlings/cuttings
27:20 Photo periods and light pollution thresholds during dark periods
30:20 New light pollution sensors
31:30 Light requirements of different cultivars
32:50 Light quality effect on the synthesis of cannabinoids and terpenes
34:17 UV and Far-red effects on cannabis
39:40 Optimal spectrum for veg and flowering
42:52 Design Light Consortium (DLC) and light efficiency listings
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APOGEE PPFD HANDHELD METER VERSION
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Design Light Consortium: https://www.designlights.org/