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LED Grow Light FAQ

1. What is LED Grow light?

Answer: As we all know, plants need light for nutrient uptake, and they use the energy of light for photosynthesis to obtain the necessary nutrients for growth and development. Therefore, photosynthesis is the key to the survival of plants. LED plant light is a special light with a specific spectrum wavelength designed to replace sunlight with light emitted by LED light-emitting elements to promote photosynthesis of plants and create a light environment suitable for growth and development of plants.

2. What are the characteristics of LED Grow lights?
Answer: The spectral wavelength required for plant photosynthesis is usually in the range of 400 ~ 720nm. The blue light of 400 ~ 520nm and the red light of 610 ~ 720nm contribute the most to the photosynthesis of plants. The red and blue wavelengths of LED plant lights are just in this range, which can provide plants with spectral wavelengths suitable for their growth to promote plant growth. At the same time, LED plant lights are also energy-saving (high photoelectric conversion efficiency, power consumption is 1/4 of fluorescent lamps, 1/10 of sodium lamps), spectral tunability, good point light source, cold light (low heat), good Features such as moisture resistance, small size and long life (more than 30,000 hours). LED plant light supplement light technology will be the new trend and development direction of IT agriculture (science and technology agriculture) and urban facility agriculture.

3. What is the effect of using LED Grow light?
Answer: LED Grow light supplement light technology is a new technology that has emerged with the development of LEDs in recent years. A large number of studies and applications of LED plant growth lights in facility cultivation environments have shown that it can solve the spectral components of other artificial light sources. Problems such as impure light quality, inconsistent light intensity, and low energy efficiency of the light source. The use of LED supplement light technology can significantly promote the development of spinach, radish and lettuce, improve morphological indicators, and increase its growth rate and photosynthetic rate by more than 20%. It can maximize the bioaccumulation of betatin in sugar beet and produce the highest accumulation of sugar and starch in the hair roots. The morphology of the stems and leaves of pepper and perilla can be significantly changed, and the photosynthetic rate of the plant can be significantly increased. Used on flowers, it can increase the number of flower buds and blossoms, improve the quality of the flowers and prolong the flowering period. It can cause an increase in the number of stomata in marigold and sage plants, and the increase in stomata means an increase in photosynthesis. LED plant light supplementary light technology will be the development direction of urban facility agriculture and IT agriculture (science and technology agriculture). At present, it has become popular in the cultivation of flowers and vegetables in Japan and USA.

4. What is the appropriate distance between the LED Grow light and the illuminated plants?
Answer: The installation of LED Grow lights must be scientific in order to effectively improve the light utilization rate of plant lights. In order to ensure the light intensity of the plant, the plant light should be placed as close as possible to the plant, and the distance should be set according to the power of the plant light. Generally, the closer the distance between the plant lamp and the plant, the higher the light utilization efficiency. Use LED plant light to fill light, because LED has little heat energy, it will not burn plants, it can be irradiated at close range, the shortest distance can be 10 cm. Generally, for plant lights with power less than 8W, the irradiation distance is about 0.5 meters, and for plant lights with power greater than 8W, the irradiation distance can be between 0.7-1 meters.

5. How long is the exposure time generally?
Answer: Depending on the growth period and growth environment of the plant, the time it takes to fill light is different. Indoors where the light is not strong but can shine into the astigmatism of the sun, the fill-in time should be no less than 5 hours; for the balcony with less than 4 hours of light (only in the morning or afternoon half of the day), the fill-in time should be no less than 4 hours ; Shady areas and indoor areas without sunlight should be filled with light for no less than 10 hours. Generally, the time for supplementing light during the growth period of plants is longer, and the dormancy period is less. On cloudy, rainy, and foggy days, the light should be supplemented for no less than 10 hours. One more thing to note is that since most plants photosynthesize during the day and grow at night, there is generally no need to supplement light at night.

6. How to choose the configuration ratio of red and blue lights when buying Grow lights?
Answer: This is the most frequently asked question in buyer consultations, and it is also the most difficult to answer. Because of the wide variety of plants, flowers are foliage, flowering, fruiting, succulent, flowering and then growing leaves, vegetables are leafy (such as spinach, lettuce), and For rhizomes (such as lettuce, radish), etc., it is difficult to answer exactly which plant is suitable for which configuration. But I will teach you a simple method. The ratio of red to blue light of daylight is about 6.8:1. For reference, for flowers or leafy vegetables, choose the configuration below 6.8:1, let the blue light be a little bit more, because Blue light is conducive to the growth of plant leaves. For flower viewing, choose 6.8 or above for supplementary light during the flowering period, and let the red light be more, because the red light is conducive to the flowering and fruiting of the plant. From seedlings to flowering, the whole growth period needs to be filled with light, just choose 6-7:1.
7. How can the prices of different sellers be different for the same LED Grow light?
Answer: The performance of LED Grow lights depends on the quality of LED light-emitting diodes. Due to the uneven quality of light-emitting diode manufacturers, the quality of the red and blue lamp beads produced is also very different. Take 5mm straw hat light-emitting diodes as an example. From the price alone, there are a few cents, there are about 0.20 yuan, and there are about 0.50 yuan. Some sellers use a few cents of lamp beads to produce plant lights, and the price of their products can be set low, but the light efficiency of such plant lights cannot guarantee the good growth of plants, and the quality is not reliable. The lamp beads of the Grow lights in Reita are selected from Osram or Samsung. The lamp beads have high luminous intensity, pure light color, and good consistency, ensuring that the LED Grow lighting produced is high in efficiency.

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