True Living Organics - The Ultimate Guide to Growing All-Natural Marijuana Indoors (2012)

Fluorescent and Compact Fluorescent Lighting (CFL)
These bulbs have their place in any indoor grow room. I tend to root cuttings under small 21 watt blue
CFL bulbs from General Electrics (GE), and I always like to keep freshly planted cuttings, as well as
mother and father clones, under fluorescent lighting too. For these purposes I also tend to favor the
bluer or “cooler” bulb spectrums, as I believe it helps the plants to grow roots faster than the redder
or “warmer” spectrum. Under these light sources, the plant’s metabolism will be slower than under
HID lights, which is why they are ideal for longer-term clones that you don’t want growing
particularly quickly.
I use CFLs to root cuttings, with the cooler spectrum being my preference
Sprouting and vegging under HID and LED bulbs will really increase your growth rates and add to
your yields at the end as well. I recommend Blue Halides for these purposes, depending on your
specific needs with regards to heat and power bills. I also love the newer LED technologies for the
vegetative growth stage, and these seem to surpass the performance of HID lights, despite the HID
lights being twice the wattage of the LEDs. For rooting cuttings, I like the smaller 21 watt CFL bulbs
from GE or cool fluorescents, both kept at a height of approximately 1 foot from the tops of the
cuttings.
REV’S TIP
In my experience, HID lights are NOT a good choice for rooting cuttings.
Cloning for TLO