Which CFL is better?

A

Artis

Active Member
I'm just wondering which is better for growing, in general... a 19watt 3000K cfl

or a 23watt 1600K cfl?


any help is very appreciated
 
Quickee

Quickee

Well-Known Member
what you want more of a light that has a blue spectrum for veg. 6000k is best for veg. anything lower is more of a red spectrum and is best for flowering.
 
Quickee

Quickee

Well-Known Member
i dont do know much about CFL..what are the lumens on each bulb..go with the higher lumens
 
Roseman

Roseman

Elite Rolling Society
With CFLs, you need the DUAL SPECTRUM, red and blue. That does not refer to the color of the bulb that you see. It refers to the kind of rays, UVA or UVB, or the color temp, called kelvins.
CFLS come in 2700 kevins, 3000, 4100, 5100, and 6500.
2700k is for BLOOM OR FLOWERING , 6500k is the VEG Spectrum. The others are "MID" spectrums or in between.
In outdoors, the sun produces different rays in the spring (VEG Rays called Blue) and late summer for Bloom spectrum, the RED spectrum. (see more below) You need both.
 
Roseman

Roseman

Elite Rolling Society
Color rating - Measured in Kelvin (K). The higher the number, the more bluish the light. 4000K-7000K is mostly on the blue side of the spectrum for Vegging or GROWING, while 3000K and under goes from a white spectrum, to a redder spectrum and is best for BLOOMING or FLOWERING.
 
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