The Emerson enhancement effect as it relates to photosynthesis of plants states that there are 2 photochemical reactions (PS1 & PS2) involved in photosynthesis which combine to enhance efficiency. Emerson measured photosynthesis using both red and far-red light (infrared) light. He found that the combination of the two speed up photosynthesis. Furthermore, Emerson observed that the yield obtained using both red and far-red light simultaneously was much higher than the sum of the yields obtained with red and far-red light separately. The best way to achieve the Emerson effect is by using an infrared wavelength of above 700nm in order to accelerate the interaction of molecular energy.
Two different reaction centers or photochemical events are involved in photosynthesis. One event is driven by red light (660 nm) and the other is driven by far-red light (680+ nm). Optimal photosynthesis occurs when both events are driven simultaneously or in rapid succession. These two photochemical events operate in series to carry out photosynthesis optimally.
How can one obtain both red and far red light in their indoor garden? The best way to do this is to grow with LED grow lights that are configured using the scientific principles of the Emerson effect. It is important to have the wavelengths of light necessary for photosynthesis and to have them at the correct weighted average percentages in relation to one another. By growing with LED indoor grow lights that have the Optimal 8-band wavelength formulation in addition to the principles of the Emerson effect the trichome formation and budding production will be ramped up resulting in the optimal yield for the indoor plants.Read More
G8LED designs and manufactures its regular Veg + Flowering LED panels and BLOOM only panels. They do this to accommodate different configurations of growing.
If you are growing and flowering in the same area…
Use the appropriate panel depending in your veg/flower grow area:
Raise the light as your plants grow so that they continue to reach for the light source as they would for the sun. Follow recommended light distances. Add 1-2 of the G8-90RR All Red UFO lights when you start flowering. Use this method when growing and flowering in the same area. Your G8LED panel is versatile and has been designed for both the vegetative growth and bud flowering cycles. Hang the 90RR All Red UFO lights right next to the main panel. You can also angle the UFO lights and place them on the side walls if you will have several in your grow room.
If you have separate veg and flowering stations…
This is the preferred method if you are doing an assembly line type of grow where you have separate growth and flowering stations running at the same time. Use your main panel in your vegetative growth room.
Use the appropriate panel in your vegetative growth area:
Use the BLOOM light in your flowering area:
G8LED has designed the G8-240BLOOM and the G8-450BLOOM lights specifically for flowering. The G8-240BLOOM will cover 6+ sf of flowering space. The G8-450BLOOM will cover 12+ square feet of flowering space. Place two or more of these lights 3-4 feet on center and increase the grow area coverage per light from cross coverage.
In a quest to find the best LED grow lights, I came across the question of which is better, 1w vs. 3w vs 5w diodes. I first started researching the history of LED grow lights and then compared different models of lights with varying diode sizes. My research led me to the following analysis.
LED grow lights have come a long way since the 13 watt panels consisting of 225 diodes each drawing one eight to one sixteenth of a watt of power. Those 15 row by 15 column panels were not able to grow much of anything except simple grasses and sprouts, and did not even do that very well. Those initial cheap panels gave LED grow lights a bad name for years until stronger diodes became readily available. I am surprised that these 225 diode models are still being sold today.
Shortly thereafter, LED grow light manufacturers starting using 1 & 2 watt diodes in LED growlights. The larger wattage diodes provided a great improvement over the smaller diodes. They were able to penetrate a plant’s canopy three to four feet. Although this amount of penetration sufficed for most growers, the commercial growing segment of the indoor growing market needed a plant grow light that could reach down an extra foot or two to the bottom of the plants.
In 2009, many LED grow light manufacturers starting using 3 watt diodes in their grow lights. The 3 watt diode provided the ideal balance of canopy penetration without being plagued with heat issues that come with larger diodes. With 3 watt diodes, a grow light was able to penetrate up to 5 feet past the plant’s canopy and was the perfect design being demanded by the indoor growing market.
Shortly after 3 watt diode light were introduced, clever marketers started manufacturing indoor grow lights with 5 watt, 10 watt and even larger diodes. On the surface this seems to be natural progression for grow light strength, but the LED grow lights with the larger diodes have some very critical drawbacks. The first issue is that of heat dissipation and density. As the diode size increases, so does the amount of heat that needs to be dissipated by the diode chip. Larger wattage diodes need larger heat sinks to dissipate the heat that they give off. This results in heavier and bulkier lights. Another critical design drawback of the larger diodes is that they can not be packed as densely as the 3 watt designed lights. When using 5 watt or 10 watt diodes, you must space the diodes further apart, again because of the problem of heat dissipation. The result is a less densely packed grow light that is heavier and bulkier.
The biggest drawback of the 5+ watt diodes is their price. Not only do they cost more overall, but they are also more expensive on a $/watt and $/ growing area covered basis. A quick analysis shows that it is not worth paying a premium to have larger diodes in LED grow lights. The added penetration is superfluous and unnecessary for indoor growers and it comes at a burdensome cost – increased price and less densely packed network of diodes.
Bigger is not always better. When it comes to the question of 3 watt vs 5 watt diodes for LED grow lights, the 3 watt diode is the smarter choice for any indoor growing project.
Ehud Muhlev, PhD. EE
Protect Your LED Grow Light and your Plants with a Power Stabilizer
Buying a LED grow light is a capital investment for your indoor growing hobby or business. The investment offsets other capital expenditures by eliminating the need for ballasts, reflectors, heat venting systems and airconditioning in addition to lowering operational costs by dramatically decreasing the electricity consumption of your grow room.
To protect your investment you should connect your LED grow light to a power stabilizer. The power stabilizer will regulate the voltage coming from your power box and eliminate various power fluctuations which can damage devices. If too many high wattage devices are connected to the same circuit there can be voltage fluctuations which damage power drivers inside the LED lights which power the diodes. This is especially true for growers who use solar energy to power their grow rooms since these systems tend to have power spikes and surges.
A power stabilizer can be purchased online for $20-50. It is a great investment to protect your lights and plants, to ensure there is no down time during critical stages of growth.Read More
Lumens, Watts, Power Draw, PAR, Grow Area Coverage
Many growers ask us about the Lumen output of our full spectrum LED grow lights. Lumens is a measure of how bright a light will appear to the human eye, not how well a light will grow plants. Trying to rate a LED grow light by its Lumen output will not accurately describe the growing ability of the LED grow light. LED grow lights target specific wavelengths of the light spectrum needed for plant photosynthesis. Since the human eye is most sensitive to colors plants don’t need such as green, and least sensitive to colors plants prefer, Lumens can’t be used to accurately compare the plant growing capability of LED grow lights.
Here is an example that brings this idea to light. In movie production many scenes are filmed with a “green screen” background which later is filled in with whatever landscape is needed. The reason the screen is green is because this is the color most easily seen by the human eye. On the other hand, green plants reflect the green wavelength of the visible spectrum of light. G8LED lights sold by Dorm Grow LED do not have any green wavelength diodes as these are not the optimal wavelengths needed for photosynthesis of plants.
What is the best way to measure the strength and effectiveness of LED grow lights? The strength or intensity of the light can be roughly measured by the total power draw of the LED grow light. The higher the power draw, the more intense the light will be. Another measure is the photosynthetic action radiation (PAR) output of a grow light which measures the effectiveness of a grow light for photosynthesis or growth. PAR is measured in micro mole units or uMol which is also known as the photon flux density of light per meter squared per second. Effective PAR ratings should be above 600uMol to be highly effective in photosynthesis or the growth of the plant. G8LED grow lights have PAR ratings of 1200-3600 uMol which means they are very effective in growing plants! If photon flux density of light per meter squared per second is too confusing for you, we have simplified the specification and provided the recommended grow area coverage for each LED grow light. For example, the G8-240 will provide 6 +square feet of coverage, the G8-450 will provide 12+ square feet, the G8-600 will provide 18+ square feet and the G8-900 will provide 24+ square feet. If you have any questions regarding Dorm Grow LED’s line of full spectrum LED grow lights by G8LED please email us at firstname.lastname@example.orgRead More
LED options for designer lamps
Every designer knows that a good table lamp must not only be appealing to look at but must also be able to serve its purpose well. Thus, design aside, properly choosing the appropriate light source for a lamp should be on top of the designer’s to-do list.
Power efficiency and cost saving have become major considerations in today’s lighting fixtures. Incandescent light bulbs are commonly used in lamps because they emit a warm light color that is perfect for a cozy, relaxed setting. Unfortunately, incandescent bulbs are also notorious for being inefficient and less durable. Fortunately, there is another option – LED.
An LED or light emitting diode is a type of solid-state lighting that is exceptionally efficient and durable. Unlike the incandescent and fluorescent lights that are made up of filaments inside glass bulbs or tubes, an LED contains small lenses where tiny chips are placed on a heat-conducting material. Because of its design, LEDs have very low power consumption thus making them more energy efficient and a big cost-saver.
The major advantages of LEDs are:
• Efficiency – when designed properly, an LED typically emits 80% light energy and the rest is lost as heat energy whereas incandescent bulbs are the exact opposite where 80-90% of its electrical energy is lost as heat energy. This translates to a significant reduction in electricity costs. Also, LEDs emit light in a single direction thus further decreasing energy waste.
• Durability – an LED is a type of solid-state lighting. As the term suggests, LEDs have no hollow areas and moving parts that are susceptible to breaking, wear and tear, and shock. A typical LED can be dropped without breaking. A well-designed LED is
rated for 50,000 hours of usage compared to just 2,000 hours for incandescent bulbs, 10,000 hours for compact fluorescents, and 30,000 hours for linear fluorescent bulbs.
• Size – LEDs are incredibly small in comparison to its light output. This makes them perfect for designer lamps that needs light sources in unconventional locations. They can be used in a bunch, or strategically placed in a lamp to create light effects.
• Lower temperatures – this is a crucial aspect for lamps, especially desk lamps. Both the incandescent and fluorescent light bulbs convert most of its energy to heat. For incandescent bulbs, 90% of its electrical energy is given off as heat while heat waste
is at 80% for fluorescent bulbs. LEDs, however, only wastes 20% of its energy as heat. This makes LEDs ideal for reading lamps or desk lamps where accidental contact with one’s skin often happens. As well, LEDs are perfect for hot areas where the common cause of light fixture failures is heat.
But there’s a downside to LED bulbs too. Because it is a relatively new technology and the market is not as large yet, LEDs are more expensive than conventional light bulbs. Though recent moves in the lighting industry as well as government response to addressing climate change have made a head start in lowering LED prices, it will still take quite a while before it becomes more affordable. However, because LEDs last longer and are more durable, the expense is really worth it.
About the Author:
Marketing Director of IllustraLighting
Cassandra is a marketing professional with over 15 years of extensive experience leading corporate marketing and internal communications for multi-national companies in diverse industries.