Ok so I looked up all the different wavelengths of light plants use and came to the conclusion that CFLs around 5100k (~ 500nm) would be best for veg growth. Then I see that a lot of the grow shops online sell those 200w CFLs and they are mostly 6500k, give or take 100w. So which one do you all think is better? If you have experience with both awesome, if you just know the answer then that's good too.

I'm using 5100k and if I buy more I was going to get the same, now I am unsure. If you can help that'd be awesome! :jointsmile:
canuck grower Reviewed by canuck grower on . CFLs: 5100k or 6500k? Ok so I looked up all the different wavelengths of light plants use and came to the conclusion that CFLs around 5100k (~ 500nm) would be best for veg growth. Then I see that a lot of the grow shops online sell those 200w CFLs and they are mostly 6500k, give or take 100w. So which one do you all think is better? If you have experience with both awesome, if you just know the answer then that's good too. I'm using 5100k and if I buy more I was going to get the same, now I am unsure. If you can Rating: 5