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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 23, 2015 4:28 PM CST
|I have the T8 bulbs but will have to check the output. I think I have a light meter around here somewhere, but when I replace them I will assuredly make sure they are in the daylight range. Thanks Ken.|
Feb 23, 2015 4:44 PM CST
drdawg (Ken Ramsey) - Tropical Plants & More
I don't have gray hair, I have wisdom-highlights. I must be very wise.