Professional Marijuana Grower November-December 2017 Issue | Page 12
cooling area, which increases longevity and overall
effi ciency. Perhaps the most impressive feature of COB
LEDs is their radiant effi ciency. A typical HID (single
ended) system has a radiant effi ciency of around 30%.
This means that roughly 70% of the electricity used by
the system is lost as heat and not converted into usable
light. A COB LED has a radiant effi ciency of 40-50%,
which, relatively speaking makes them one of the most
effi cient artifi cial light sources for growing plants. All in
all, COB LED lighting systems are the most effi cient at
converting electricity into usable light and are surely a
technology that will help shape the future of cannabis
cultivation.
All Things Considered
Let’s get
growing
naturally
It is very important for a marijuana grower to not only
examine his or her lighting system’s effi ciency, but to
also look at all the factors in the growing facility which
impacts the garden’s overall effi ciency. When calculat-
ing how much marijuana per watt of energy consumed
was produced by a garden, it is imperative that all
watts are considered. For example, if a grower uses
10,000 watts in artifi cial lighting and 4,000 watts in
air conditioners and other equipment, he or she should
calculate the effi ciency based on 14,000 watts of
electrical usage. Certain lighting systems may produce
larger yields, but may also require additional cooling
equipment which could more than offset the increase in
yield. In other words, even though the lighting system(s)
is the main contributor, a grower must make sure to
consider all input factors when determining a garden’s
overall effi ciency and his or her return on investment.
New horticultural technologies are being developed
all the time. Indoor marijuana growers have been
infl uencing the development of new technologies in the
horticultural fi eld for decades. With new state laws,
which ease restrictions on cannabis growing, we are
sure to see even more innovations developing in the
artifi cial lighting sector. Induction lighting, square wave
HID technology, and COB LED lighting systems are all
effective and effi cient choices for modern marijuana
growers. Ultimately, the size of the growing facility, the
heating and/or cooling requirements, and the grower’s
budget will be the determining factors as to which light-
ing system will be the best. One thing is for sure, the
number of marijuana growers across the globe is con-
stantly climbing. Choosing an effi cient lighting system is
important for hobbyists who want an effi cient garden,
but it is imperative for commercial marijuana growers
who want to continue to compete in the industry. PMG
To see the full line of Age Old products and
find a dealer near you please visit:
www.tradewindsgarden.com
12 • Professional Marijuana Grower
Eric Hopper is a Professional Marijuan