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What's the best LED grow light 2021?

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grow light
LED Grow lights are a new technology, and it may not always be easy to spot the light that will work the best for you.
But there is no doubt that finding the best led grow lights will significantly improve your work.
Whether you’re replacing an older light system or you’re only just now starting a grow project, you may be overwhelmed by the number of choices you’ll be confronted with when you purchase your first full spectrum LED grow lights.
What is Photosynthetically Active Radiation PAR?
Photosynthetically Active Radiation or PAR means the wavelength that plants use to create energy. Different plants thrive with different varieties of light, so it’s best to include as many wavelengths that emit PAR as possible.

What is PPFD?
Photosynthetic Photon Flux Density or PPFD refers to the amount of light that gets to your plants. In other words, various things can prevent light from reaching a plant’s surface, so a light’s rating of what it is generating at the source isn’t always telling the full story.
Why use LED grow lights?

There are some great reasons to use LED grow lights:
You have more control over your plants
The right temperature is critical to ensuring your plants don’t get burned or wilt. Optimal growth means the right balance of warmth and cool. LED lights produce less heat and don’t get as hot to the touch, and are therefore far less likely to damage your plants.
LED grow lights also give you more control over wavelength and even wattage. This allows you to manage the light intensity and wavelength your plant will receive at each stage. Many come with dimmer switches and other precision controls. LEDs also allow you to better plan for unique grows and provide better coverage by configuring multiple lights.
They run cool and eliminate the need to ventilate
No one needs the added expense of a separate ventilation or cooling system. LED grow lights give you intense light without nearly as much heat. No cooling or ventilation system means an additional energy savings.
Easy to install and portable
Installation is typically just following a few steps, very simple. Made with modern materials, these lights are easily portable and relatively compact.
Many LED grow light models are small, and can be configured together. This allows you to combine them to cover larger areas and unusual spaces.
More energy-efficient and cost-effective
LED grow lights have long life spans—between 50,000 and 100,000 hours, or 7 to 8 years on average, typically. LEDs are also more energy-efficient than any other type of light based on output and power drawn.

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Pros:
  • Promotes maximum yield using less energy
  • Provides a complete and customizable dual-light spectrum
  • Secondary focusing lenses reinforces its finely tuned spectrum
Cons:
  • The fans can be a little noisy
  • The light only covers what’s directly underneath it
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Pros:
  • Patented with a compact design and powerful performance
  • Packed with the best and the latest technology for boosting plants’ growth indoors
  • Uses a lot less energy and produce less heat
  • ETL, RoHS, CE, and FCC Certified
Cons:
  • Too pricey
  • Doesn’t allow you to adjust its single spectrum system for growth stages
  • Can’t be placed too close to the plants
Things to consider before buying
There are a couple of things you absolutely need to consider before choosing the best LED grow light:
1) Spacing: You absolutely need to ensure that you have an idea of the amount of space you want to cover with your LED lights. Each light has a maximum range of space that it can cover, and it'll be important to understand the measurements of your grow space down to the centimeter. If you currently do not know what that is, you should find out now. After that is done, make sure you read reviews and feedback from others on the actual space that the LED light can cover (sometimes, products are not as advertised... shocking, I know). 
2) Brand/Budget/Price: This will be important as the higher-quality lights typically yield the best results. If you are a beginner, you will likely want to start with a lower priced option to get your feet feet wet. If you are more experienced, it never hurts to go with the quality, higher-priced option. In addition, brand and quality of the light is very important. A good brand that has raving customer reviews, is almost always, a sure bet.
3) Spectrum: A full spectrum LED grow light will go a long way in terms of helping your plant growth. You'll need red & blue spectrums, but also infrared and ultraviolet, depending on the stage. It's important to have a powerful light, with different wave lengths to ensure maximum growth. The full spectrum yields are a bit newer to the industry, but they are certainly making headway to any good growers catalog. They run cool and don't need any additional fans, they cost less overtime given the electrical savings, and the durability is second to none. It is highly recommended to purchase a full spectrum LED grow light. Most LED lights have a range of colors being emitted (full light spectrum) - the best lights offer the full range, including UV light. 
4)  Electrical Usage: Your LED lights will need to have durability and great electrical efficiency as well. A good LED light should be operating for at least 10-12 hours a day. When researching a good LED light, you'll need to thoroughly understand what the total output is (1000w, 400w, 300w etc). The higher you go, the more powerful and more likely leads to less electrical usage (and more cost effective for you). 
 5) Light Control: Depending on the stage, you'll want to ensure that your plants receive the proper amount of lighting (down to the exact hour). See a breakdown of the phases below for growing LED lights:
  • Seedling Phase: 16 hours on, 8 hours off
  • Vegetative Phase: 18 hours on, 6 hours off
  • Flowering Phase: 12 hours on, 12 hours off

It's extremely important that light cycles are followed to a tee as it can severely alter the growth and potency of your plants. 

Final Thoughts
 
The best led grow lights 2021 are the ones for indoor plants if you want to grow fruits, flowers, and vegetables. Nowadays, the large commercial sectors are using LED lighting technology for large yields. That’s how they control the growth of plantation, crops, fruits, and flowers.
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