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Previously I wrote about light spectrum ranges and how those ranges affect plants. This light range is measured in nanometers, or what's called Kelvin (the K number is printed on fluorescent tubes/bulbs). What is also important is the light intensity. If the light intensity is not great enough, it really won't matter much what the Kelvin number is. Light intensity is measured in lumens.
Feb 25, 2015 5:37 AM CST
|Ken, this is a wonderful tech/reference article and I've bookmarked it for future use. Thanks so so much for sharing your knowledge!
"A garden isn't meant to be useful. It's for joy." - Rumer Godden
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