Artificial light(LED Grow Lights) can be used for plant growth in three different ways:
1. To provide all the light a plant needs to grow;
2. To supplement sunlight, especially in winter months when daylight hours are short.
3.To increase the length of the "day" in order to trigger specific growth and flowering.
Here are several reasons why you may choose to grow your leafy greens under led lights.
1- you may not have a readily accessible sunny window ledge or you may not have enough of them. I have a kitchen window ledge that gets good sun in summer but very little in winter.
2- using our desk light series you can use the lights to grow your sprouts as well as light the work area of the desk(the shade rotates to adjust the spread of light). A great break from work to look up and see your salad growing in front of you, or on your kitchen bench shedding extra light on your chopping board.
3-you may have a large family or like me like lots of salad so you can easily turn a bookshelf into your own personal salad farm.
4- as mentioned before growing sprouts inside is very convenient and free from animal and insect competition, growing under lights gives you flexibility as to where you do it with limited space, and growth rates are not affected by season, making having an indoor garden that much easier.
5- using the latest low wattage, high intensity LED grow lights, gives you even more options as it is now not only much cheaper to run, 7W vs 15W-28W, 90W vs 400W-600W(salad greens), they can also be used to grow vegetables to flower & fruit in very short periods of time. eg Tomatoes, Strawberries etc.
The Benefits of LED Grow Lights
The main benefit of using LED grow lights is the lower running costs. The better ones on the market use up to 90% less electricity than comparable Sodium/HID bulbs. LED grow lights can be used as either a primary light source or a supplemental light and they will pay for themselves in around 6 months of heavy use. The expected life of a LED grow lamp is on average 100,000 hours. This is 10 to 50 times longer than a typical Sodium/HID grow light bulb.
Although initial purchase costs may be higher than comparable Sodium bulbs, the real costs are often lower because you don't need ballast. Unlike fluorescent tubes and metallic vapour lamps that need a ballast to operate, LED grow lamps don't need a ballast. This eliminates a recurring cost from your grow room set-up.
You also don't have the extra costs of purchasing a reflector as LEDs have the reflectors built right into themselves.
Since the Chlorophyll does not have to battle with unwanted light-waves, LED's can also be left on 24 hours a day without stressing your plants out. You can also use LED grow lamps to simply extend the day period of your light cycle by 4/6 hours during the Winter months. This extends your grow season to 365 days per year.
Benefits To The Environment
Switching to low energy, solid state lighting benefits the environment. The low power requirements of LED light sources make them ideal for self-contained, solar or wind powered installations,particularly in remote locations. LEDs consume far less energy than standard light bulbs, leading to greatly reduced energy costs. LEDs also require far less energy to manufacture than other light sources, reducing their environmental impact even further. Less Environmental Hazard- Metallic vapour and fluorescent lamps all contain mercury, a heavy metal identified by the U.S. Government as hazardous to the environment and our landfills. Our LED Lights do not contain mercury.
Targeted Light Output
Broad spectrum grow lights produce a lot of light waves that plants can't use efficiently. LED Grow Lights only deliver the colours of light used by plants for efficient and healthy growth.
LED grow lights are warm to touch and won't scorch young or tender plants as HID lighting can.The high heat generated by a typical metal halide or high pressure sodium lamp can reach several hundred degrees to over 14 hundred degrees Fahrenheit at the bulb's surface. This excess radiated heat output adds to the grow room temperature greatly. Most LED grow lights operate at just a few degrees above room temperature, thus reducing your grow room cooling costs.
You wont need to water as often if you use LEDs as your plants will transpire less. If for some reason, you need to leave your grow room unattended for a few days your plants will have a better chance of surviving if the grow lights are not producing lots of heat that drys them out.
LED grow lights are ideal for plants like Salvia Divinorum and Ferns that have high humidity requirements.Cuttings will also root easily as they don't suffer as much from the stress of water loss while new roots are forming.
LED Grow Light & HPS & Incandescent & Fluorescent Parameter Comparision (for reference only)ReplacementLED Grow LightsHPS LampIncandescent LampFluorescent LampLight efficiency160 lum/ W100 lum / W20 lum / W80 lum / WReplacement80W250W600W300WFeature of Lighting SourceSolid State LightingGas Discharge LightingSolid State LightingGas Discharge LightingLifespanMore than 50000 hours8000 hours3000 hours10000 hoursEnvironment-FriendlyNo PollutionPollution by
Mercury & LeadNo PollutionPollution by
MercuryStarting WasteNormal Input CurrentInstant Big Currenttallish currentInstant Big CurrentStarting TimeNano-Second Degree>1 Minutes>150 microsecond>800 microsecondCRIHigh(>80)Low(<50)High(>95)Mid (>75)
Transformer Power Cons (Loss)10W50W045WWorking VoltageDCHigh voltage110V/220V ACHigh voltage
As we know ,the HPS, Incandescent Lamp and Fluorescent Lamp emit all the spectrum of visible light & some sightless light,but LED Grow Lights only deliver the colours of light used by plants for efficient and healthy growth !
What do you need?
Red and Blue light is essential for plant growth. It is well known that chlorophyll, which is contained in the green leaves of plants performs photosynthesis. Red and Blue are the wavelengths most essential for photosynthesis. The blue absorption region is 430-450 nm and that of red is 650-670 nm.
Recent research suggests that the ideal balance is 92% red LEDs and 8% blue LEDs. Although the lamps we use have a higher percentage of blue LEDs and they work fine. Blue has a smaller influence than red light so anything between 1% and 20% of blue light can be selected, depending on your plants and their growth requirements.
When choosing your lamp you want both colours with the same frequency and relative intensity per LED.
These days most LED Grow Lights only deliver the colours of light used by plants for efficient and healthy growth. By leaving out the wavelengths plants wont need they provide better energy efficiency than conventional grow lights.
Red Light is in the vicinity of the first peak of a plants light absorption spectrum (660nm) and it contributes to the plant photosynthesis. Red light, when combined with blue light, encourages flowering. It can also be used in higher doses to stimulate flowering, seeding and fruiting.
Blue light is responsible primarily for vegetative growth (leaf). It is known that chlorophyll has the second distinct absorption peak in the vicinity of blue light wavelengths (450nm). The blue light is also indispensable to the morphologically healthy growth plant. There is also more sunlight energy in the blue-green wavelengths.
Plant Growth LEDs HORTICULTURE LIGHTING, CUSTOM SPECTRA
The Lux1, Lux3, Lux5, Lux6 and Lux7 custom spectra LEDs are designed to work as self-sufficient light sources for horticulture applications. The supplemental wavelength LEDs are designed to complement sunlight or other light sources where applicable.
Lux1 SPECTRUM: General Purpose, High Efficiency
The Spectrum is suitable for a variety of plant species throughout their growth cycle. It contains a high proportion of red light, which spurs photosynthesis during the vegetative growth stage and facilitates the flowering stage. It has the highest photon yield efficacy of all custom spectra and is recommended for applications with a tight electrical energy budget.
Lux3 SPECTRUM: Best for Germination through Flowering
The workhorse and most popular spectrum from LUX, Lux3 produces the fastest germination and drives the best vegetative and flowering results among all of the Surexi™ spectra options. In addition to the blue and red wavelengths, the spectrum contains a small amount of green which is beneficial for the quality assessment of plants. The spectrum is recommended for use in growth chambers as well as controlled environment agriculture operations of any size.
Lux 5 SPECTRUM: Best for Human Visualization
The Lux5 spectrum, inspired by NASA, is a good choice for growing situations where it’s important for people to see plants as we’re accustomed to seeing them — that is, green. The purplish light cast by many grow lights wouldn’t work in situations where we want to see the plants — for example, on a decorative grow wall. X5 provides good light for plant growth, along with light that allows humans to see the plants.
Lux6 SPECTRUM: Best for Vegetative Growth
The spectrum has an enhanced blue region and provides the fastest vegetative growth results. The increased blue content reduces plant height, thereby improving plant appearance and space utilization.
Lux7 SPECTRUM: Best for Seedlings
This spectrum has the highest blue content of all Surexitm spectra and produces stocky plants with short internodal distances, highly desirable at the seedling stage. Recommended for growing seedlings prior to transplantation.
450 nm BLUE
This light enacts regulation by cryptochromes and phototropins, mediating various plant responses, such as phototropic curvature, inhibition of longation growth, chloroplast movement, stomatal opening and seedling growth regulation. Can be directly absorbed by chlorophyll in photosynthesis. Recommended as supplemental light for seedlings and young plants during the vegetative stage of their growth cycle, especially when “stretching” must be reduced or eliminated.
525 nm Green
The Illumitex 525nm wavelength LED can be used as a tool for eliciting specific plant responses such as stomatal control, phototropism, photomorphogenic growth and environmental signaling. When combined with blue, red and far-red wavelengths, 525nm completes a comprehensive spectral treatment for understanding plant physiological activity.
624 nm RED
This wavelength region has the highest photosynthetic relative quantum yield for a range of plants. At the same time, its action on red-absorbing phytochrome is considerably weaker compared to that of 660 nm red light and can be used to balance the phytochrome equilibrium towards lower values (closer to those of daylight) than those achievable with 660 nm red light, especially when used together with 730 nm red light.
660 nm DEEP RED
This wavelength has a very strong photosynthetic action and also exhibits the highest action on red-absorbing phytochrome regulated germination, flowering and other processes. Most effective for light cycle extension or night interruption to induce flowering of long-day plants or prevent flowering of short-day plants. Most energyefficient source for photosynthesis among all available supplemental LEDs.
730 nm FAR RED
Although this wavelength is outside the photosynthetically active range, it has the strongest action on the far-red absorbing form of phytochrome, converting it back to the red-absorbing form. It becomes necessary for plants requiring relatively low values of the phytochrome photoequilibrium to flower. Can be used at the end of each light
cycle to promote flowering in short-day plants.
Lumen and Lux
These are measurements of how bright a light source appears to the human eye only. If a grow light manufacturer rates their grow light output in Lumen then they are only telling you how bright the grow light will appear to your eyes and has NOTHIN to do with plant growth since plants only use a tiny percentage of the FULL light spectrum that old fashioned grow lights emit.
In fact Chlorophyll is green for a good reason, plants use this colour as a type of "Sun-block" to remove 95% of the unwanted and damaging light wavelengths. LED Red / Blue lighting have such narrow bandwidths that plants without green Chlorophyll would actually survive and never be damaged by the LED's perfect and tailor made light wavelengths. Nearly 100% of the light an LED grow light emits is completely absorbed by the plant! LED's can also be left on 24 hours and day without stressing plants since the Chlorophyll does not have to do battle with unwanted light-waves.
The most accurate unit of measurement for grow lights is in microEinstein's, which measures how many photons of light strike an area per second. But it is still not correct to use it for comparing grow lights because of the tiny band widths of light plants actually absorb.The irradiance power factor or amount of light that actually gets used in plant growth or Chlorophyll production can be factored at a rate of 400(u)mol/m?sec per every 150 LED's average since they have an extra high mcd output.
Now remember this rating is 95% growth efficient light!! All other grow lights except LED grow lights emit mainly wasted light energy that does not help the plant produce Chlorophyll. In fact 95% is wasted since plants only use very narrow bandwidths of the total light energy. Rating light output in simple terms like Lumen or Lux is EXTREMELY misleading especially when rating a GROW LIGHT which has a very specific job, like creating Chlorophyll 'a' and 'b' !
Lux Lighting Co., Ltd is a high-tech private enterprise, Professional in researching, developing,and manufacturing all kinds of LED Grow Light Products. The company’s cofounder is the China electron science and technology university's photoelectric expert Doctor Tai and Doctor Kim. Our company is based on the business ideology of "leading with science & technology, high quality and efficiency, honesty and customer satisfaction". We endeavour to cooperate with customers worldwide to our mutual benefit.
The company is located in Bao'an district of Shenzhen and occupied an area of 3000 sq.m, it has a capable team of more than 100 employees responsible for product research, development and production.
Our products are specifically in LED Grow Lights, LED Plant Lights, LED Greenhouse Light, UFO LED Grow Lights . The products are widely applied to all kinds of greenhouse,plant grow and Horticulture lighting projects all over China, and we currently export to more than 50 countries including Holand, Spain, America.
Our goal is to supply you the most reliable and highest quality led grow light products. All our manufacturing facilities are ISO 9000 certified, and our products have attained CE, RoHS certificates.
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