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Choose the Right LED Grow Light for Your Plants
Source: | Author:energy-01 | Publish time: 2020-12-30 | 461 Views | Share:
How to Choose the Right LED Grow Light for Your Plants

The LED you choose will be a vital part of your garden’s success, so it’s important to choose the right one. Despite all the knowledge you have about LED grow lights now, it can still be tricky to find the right one for you. So let’s look at the features you should pay attention to when shopping for the best LED for your grow room or grow tent.


Choosing the Wavelengths Your Plants Need

Particular wavelengths of light along the light spectrum stimulate specific functions within the plant. For example, red wavelengths help stimulate flower and bud growth, and blue wavelengths help stimulate branch and leaf growth

Some LED grow lights target specific wavelengths of light — like 660nm red or 465nm blue — by dying their chips a specific color. Other chips are covered and offer spectrums of light like 3500k or 5000k that give you a wide range of wavelengths depending on the phosphor used. Both are beneficial for your plants, so how are you supposed to know which ones to go with?

In order to know what to choose, it’s important to know what your plants need. Here are the wavelengths your plants will need:

  • 430 to 450 nm blue wavelengths are necessary for root growth.

  • 640 to 680 nm red wavelengths are necessary for stem growth, as well as chlorophyll, flower, and bud production.

  • IR (710 nm) helps stimulate resin production.

  • UV (10000k) helps strengthen stems and create stronger plants.

    • Note: The “K” here stands for Kelvin, which is a measurement of color temperature. The color temperature of a light is a reflection of the color given off by that light, which is usually a form of white light that contain a wide range of wavelengths.

COB and spread LED grow lights often use white light that falls within 3500k and 5000k color temperatures. These two temperatures contain all of the wavelengths of light your plants need, with 3500k offering a little more red wavelengths and 5000k offer more blue

Lights with these wide spectrums are great for growers used to HPS and MH grow lights who want the same spectral range. While it’s true plants will waste a number of the wavelengths they receive with these color temperatures, they won’t fight excess heat doing so like with HIDs. In this instance, having more spectrums than necessary can be a good thing.

Traditional LED grow lights tend to use what’s known as targeted lighting. Instead of offering huge spectrum ranges, these lights target specific nanometers (nm) of light your plants need instead of giving them with a wide range of wavelengths. These offer designated blue and red wavelengths, along with a range of orange, light blue, and even IR and UV wavelengths for a bump of protection and flavor.

These lights are capable of growing extra strong, healthy plants, as they target wavelengths plants need to ensure they don’t waste any energy getting rid of light. Because they’re so targeted, though, it’s important to make sure the wavelengths fall within the ranges above. Without them, your plants are going to struggle to grow.

Now, of course, wavelengths of light are only as helpful as the diodes that emit them. After you figure out which wavelengths of light you want to work with, it’s time to figure out the strength you’ll need for your grow room.


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