Kelvin help please!!!!!!

chris h

Active Member
I know I have 3 different K running in my grow room for my veg. I have 5 23w 6500k, 1 Growtek 6500k light, 2 13w 2700k CFLs. I also have 1 7800k light. But I have this 4 foot fixture with plant and aquarium lights on it. what is the kelvin on that and how beneficial is it to my plant
 
No one will know. Bulbs can be any kelvin rating. I can tell you that primarily aquarium lights made for plants are 6500-6700 and lights made for salt tanks, especially for corals and other inverts, are usually 10000-14000 and sometimes as high as 20000 (very very blue).
Just buy some new lights for it if you can't figure out what those ones are. I veg with an 8 tube t5 using alternating 6500 k and 3000 k, and I'm quite happy with it. I went with that because the red peak of both chlorophyll's is slightly more efficient at photosyntheses, however, a lack of blue spectrum will cause the plant to stretch because it thinks it's receiving indirect light (can't recall the name, but that is a general horticultural phenomenon).
 
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