I've heard lux isn't the best metric for usable light for plants, because it's just measuring what humans can see, while PFAR measures what plants use for photosynthesis. I know it matters when shopping for grow lights, because lux won't sustain plant growth, obviously the sun provides as much as plants need and more. Not sure how it would factor into this test, maybe lux is a good-enough substitute here.
This is a really good point! Thanks for bringing this up. You are right that PAR is more important when it comes to plant growth. After making the video, we were digging deeper into PAR and the color spectrum of light as well. We'll pack that into another video soon. Since we didn't have the equipment to measure PAR for this test, we used Lux. Lux is used for determining light intensity (bright light vs shaded light) which still tells you how much light comes through a covering material.
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I've heard lux isn't the best metric for usable light for plants, because it's just measuring what humans can see, while PFAR measures what plants use for photosynthesis. I know it matters when shopping for grow lights, because lux won't sustain plant growth, obviously the sun provides as much as plants need and more. Not sure how it would factor into this test, maybe lux is a good-enough substitute here.
This is a really good point! Thanks for bringing this up. You are right that PAR is more important when it comes to plant growth. After making the video, we were digging deeper into PAR and the color spectrum of light as well. We'll pack that into another video soon. Since we didn't have the equipment to measure PAR for this test, we used Lux. Lux is used for determining light intensity (bright light vs shaded light) which still tells you how much light comes through a covering material.