As a led grow light supplier for several years, we know more about the grow light function for plants. So can i use normal led light instead of led grow light? Our answer is “No”. Why not? Please read what’s the difference between led grow lights and normal led light.


Whats the difference between led grow lights and normal led light?

Different spectrumwavelengths

The main difference between ordinary led lighting and led plant growth lights is that the spectrum is different. The led plant growth lights remove the light that has no growth promoting effect on plants, and the spectrum is more conducive to promoting plant growth. The wavelength of red light of plant lights is mainly concentrated in 630~660nm, and its function is to help plants to bloom and fruit. However, the wavelength of blue light is mainly concentrated in 450~470nm. Its function is to help plants grow stems and leaves. Plant growth lights mainly use a combination of red and blue light.


Ordinary led lights can only be used for lighting, or commercial lighting. LED plant lights provide a reasonable light environment for plants, promote the growth and development of plants, and have certain requirements for light quality, light intensity, and spectrum. Plant lights are expensive because they have high requirements and can bring benefits. LED plant growth lamp uses LED (light-emitting diode) as the light source. According to the law of plant growth, it must need sunlight. It is a kind of lamp that replaces sunlight with light to provide the growth and development environment of plants. The use of LED plant growth lights can emit specific red and blue light that plants need, so the efficiency is extremely high, the effect is very significant, and the growth rate is almost 3 times faster than that of ordinary plants that grow naturally.


Structure is different

LED is also called light-emitting diode. The core part is a wafer composed of P-type semiconductor and N-type semiconductor. There is a transition layer between P-type semiconductor and N-type semiconductor, which is called P-N junction. When the current flows from the LED anode to the cathode, the semiconductor crystal will emit light of different colors from purple to red. The intensity of the light is related to the current.

According to luminous intensity and working current, it can be divided into ordinary brightness (luminous intensity <10mcd), high brightness (luminous intensity 10-100mcd) and ultra-high brightness (luminous intensity>100mcd). Its structure is mainly divided into four major blocks: the structure of the light distribution system, the structure of the heat dissipation system, the drive circuit and the mechanical/protective structure.

Research on LED as supplementary lighting for plant photosynthesis. Traditional artificial light sources generate too much heat. If LED supplementary lighting and hydroponic systems are used, air can be recycled, and excess heat and water can be removed. Electricity can be efficiently converted into effective photosynthetic radiation, and finally into plant matter. Studies have shown that the use of LED lighting can increase the growth rate and photosynthesis rate of lettuce by more than 20%, and it is feasible to use LEDs in plant factories.


Different usage

LED plant lights help shorten the growth cycle of plants, because the light source of this kind of light is mainly composed of red and blue light sources, using the most sensitive light band of plants, red light wavelengths use 620-630nm and 640-660nm, blue wavelengths 450-460nm and 460-470nm. These light sources are to make plants produce the best photosynthesis, and the plants get the best growth state. Experiments and practical applications have shown that in addition to supplementing the light during the lack of light, they also promote the growth of plants during the growth process. The differentiation of side branches and buds accelerates the growth of roots, stems and leaves, accelerates the synthesis of plant carbohydrates and vitamins, and shortens the growth cycle.


The difference between LED lamp beads for plant growth lamps and ordinary LED lamp beads

The wavelength of the lamp beads used in general plant lighting must meet the needs of plant growth, such as 740nm high red LED lamp beads, 650NM red LED lamp beads, 450nm blue lamp beads, and a small number of white LED lamp beads are also useful, in the range of 395-420nm. The purple LED lamp beads and so on, and the LED lamp beads of these wavelengths are different from the conventional blue and red light. For example, the conventional blue LED lamp beads are basically at 460-470NM, and the red LED lamp beads are mainly at 620 -630NM.


Can I leave led grow lights on 24 hours a day

First of all, you have to understand, what is the function of led plant lights? It has two main functions. 1. Make up for insufficient natural light intensity. 2. Make up for insufficient natural light time.


Secondly, you have to be clear, how much light is normally required for the plants you plant, and how long does it take to light? How to figure it out? For example, the fleshy origin of Africa, the light time of each season in the place of origin. These can be found. What you have to do is to provide these plants with the same light intensity and time in your home and their place of origin. Then how many hours can be calculated.


The led grow light can be used during the day when the sun is shining. Supplement the light during the day when there is no sunlight or when it is cloudy or rainy. It can also be used at night to supplement light. If it is a sun-fast plant, you can give it more. In fact, if there is no need for viewing, it is better to supplement the plant lights during the day according to the light time of the plant’s native place. Combined with seasonality, it is possible to adjust the lighting.


For example, the native land has sufficient light, 12 hours a day. You can set it up when there is natural light during the day, and then supplement the plant lights at the same time. This way you don’t need very large power. The photometric value can be measured with a photometer. It is enough to meet the lighting conditions of the growing place. If your local natural light is only 8 hours, at this time 8 hours of daylight and natural light are irradiated together, which is not enough. If you want to illuminate the plant light alone at night, you must increase the light power and make up for 4 hours. Use 1 lamp to make up during the day and 4 lamps to make up at night.


Thirds, if you want to use the plant light to have a good effect, in addition to using the appropriate plant light, you must also have the correct method of use, such as the distance between the plant light and the plant, and the use time of the plant light. Then let’s take a look at the use of plant growth lights, how long is the appropriate time to take?


the role of the plant light is to give plants when the natural light is insufficient, so we must pay attention to it, if the weather is sunny and sufficient, then there is no need to use the supplement light, otherwise it will not only consume electricity, but the effect will not be as good as the natural light. Effect. If there is sufficient sunlight during the day, you can add light for 2-3 hours in the morning or evening. If it is raining on a cloudy day or when the light is insufficient for a long time in a hazy day, you should use the fill light for a long time to fill up the light. You can fill up the light all day, and you can also extend the fill light time appropriately at night. If it is sunny during the day, you can add light for 4-5 hours a day. If the light is weak during the day, you can add light throughout the day. If the crops have higher requirements for light, you must adjust the time of the light according to the actual situation. However, the crops have to “rest” at night, so do not fill up the crops overnight, otherwise it will have a counterproductive effect.


If you would like to get more information about led plant grow light, or relative plant or led grow light knowledge, Feel free to contact us. I’m would be happy answer you. Thanks you.