Best LED grow lights for indoor gardening

Top 6 Best LED Grow Lights for 2021

Searching for the best LED grow lights in 2021?

Every year, new grow lights are introduced into the market and 2021 is no exception for some of the best LED grow lights available. There is no better time than this year to upgrade your lights, as we are seeing prices drop, new technology introduced, and LED grow lights that are promising better results in every growing season. The only issue is, “Which LED grow lights are the best this year?”

So what do the best grow lights in 2021 look like?

List of the best LED grow lights 2021, ordered by the top reviewed LED grow lights for cannabis, best LED grow lights under $500, best LED grow lights under $300, best budget LED grow lights and best quantum board grow lights.

best led grow lights 2021

Best LED Grow Lights For Cannabis 2021

The demand for Best LED grow lights is increasing, and they are very popular products available in the market for indoor plantation.  Also, in the United States, United Kingdom, and Canada, the demand for cannabis indoor cultivation is increasing, and for better cultivation of cannabis plants growers are using LED grow lights. Using LED grow lights for your indoor plantation of cannabis with a better environment can provide high-quality marijuana and you are sure to obtain a high yield.

The Best LED Grow Lights are usually used for indoor gardening, horticulture, food production including aquatic plants and hydroponics, plant propagation, and cannabis cultivation.  The grow lights are also used mostly in the industries but they are also useful to grow nutrient plants at home.

Here you can find some of the best LED Grow Lights 2021 that can help you choose the best one for your indoor plantation needs.

ViparSpectra UL Certified 600W LED Grow Lights


VIiparSpectra 600W is a UL certified LED Grow lights as lighting safety is equally significant as efficiency. The ViparSpectra meets meticulous UL testing and safety standards to assure safe operation. The fire-resistant reflectors reinforce the light penetration, and this 600W LED grow light is a trusted brand available in the market that offers high-quality and safe products and provides the best customer care services.

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The secret behind the ViparSpectra Grow Light’s success is the best spectrum lighting that offers plants in all stages from seed to flower with everything they require in the natural sunlight. With these grow lights, growers can expect bigger buds and greater yield and they can as well save energy costs.  The grow light’s veg and bloom switches are perfect for all growing phases. Advanced high-speed-quiet fans and aluminum cooling heat sinks are perfect for heat dissipation.

The product offers a Daisy Chain feature that helps growers to connect several lights through fewer outlets. The ViparSpectra grow lights package includes a power cable with a dual purpose that serves as a daisy chain cable and power plug. No extra cords are required you just need to plug in the power cord in the outlet to connect multiple units.


  • The 600W grow light is ideal for a 3’x3’ veg coverage and 2.5feetx 2.5feet flowering coverage at 22”. Ideal for 3x3feet growing area at 24inch height.
  • ViparSpectra HPS/MH LED grow lights consume 276watts compared to traditional grow lights.
  • Maintains the balance of the Lumen/PAR coverage and output.
  • LEDs angle is at 90-degrees.
  • Three years warranty and offers 30-days many back guarantee if the customer is not satisfied with the product.


  • The veg cycle is perfect
  • Perfectly designed with 100-percent functioning LEDs
  • Provides very little heat and runs cool
  • Easy to control the temperature in a growing area


  • A bit expensive

Bestva Series 600W LED Grow Light


Bestva 600W is a full spectrum dual-chip LED grow light designed for hydroponic indoor plants. These 10W dual-chip LEDs are more efficient and much brighter than traditional 5W and 3W LEDs.  It is the highest lumen output/par per watt.  Nine bands of LEDs that are different from each other makes the full spectrum light that helps vegetables, plants, and flower grow indoor at all stages as this LED light offers a light that is similar to natural sunshine. Bloom for seedling/flowering, Veg for growing, the recommend lighting requires for 12 to 18hrs a day.  If the plants require more energy, then turn on both switches at the same time.

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Bestva DC Series 600W LED grow light is a powerful cooling system as it is made of an aluminum plate of 3mm thickness radiator for improved heat degeneracy.  The aluminum plate contains holes and the glass generates heat convection, run 50to 60-degree Fahrenheit lower than any other LEDs.


  • Competent cooling fan system, quiet and cool
  • It is the highest Lumen output/Par per LEDs
  • 10W dual-chip LEDs offer much better and efficient light compared to traditional ones
  • Consumes only 125W compared to the 250W HPS
  • Runs low temperature, which is 80percent cooler than high-power discharge lights
  • Suitable for 4×3.6feet growing area at 24-inches height
  • The best choice for vegetable, plants, and flower indoor growing at every stage the same as growing in daylight


  • The LED Grow Lights package costs less compared to other LED grow light brands
  • Do not need a lot of ventilation as it runs at a minimal temperature
  • Covers an area of 4feet x 3.6feet at 24-inches height that is ideal for a small tent
  • Spectrum feature perfectly imitates natural sun that is best for the plant at every stage from veg to bloom and also perfect for cannabis growth


  • Some customers are not happy with the LED lights as they burned easily immediately after the purchase and no obvious increase in their vegetable growth

Kind LED K3 XL600

Much like the Kind XL300 and XL450, the Kind K3 XL600 is also a 3-watt grow light. However, unlike the K3 XL300 Series, the XL600 is more advanced and is a perfect fit for large-scale growers with the added benefit of the tuned spectrum and intensity options. This is because it has an additional optical lens, meant for under-canopy penetration which makes the spectrum and intensity commercial grade.

With large heat sinks, that ensures the system emits as little heat as possible, not forgetting the internal cooling fans which run noiselessly and are also meant to keep the area cool and in range for proper growing. It`s definitely the perfect fit for a crowded indoor growing space, because of its advanced light penetration capabilities.

Features and specs

  • 12-band spectrum
  • Secondary optical lens for under-canopy penetration
  • Large heat sinks
  • Quiet fans
  • 3′ x 4′ coverage
  • 700mA
  • 288W
  • 150 LED diodes each diode being 3w
  • 3-year warranty
  • HPS equivalent: 600W
  • Estimated life: 50,000 hours
  • Enhanced diode efficiency, for PAR magnification
  • 90-day money-back guarantee
  • Weight: 24 lbs
  • Amp: 2.67
  • Input Voltage: 100- 240V AC Power Input

Roleadro 300W LED Grow Light

Roleadro 300W is a LED Grow Light that weighs 2.5kg and works for 12hrs to 14hrs per day. This 308*208*600mm LED Grow Light is the best choice for indoor plants and this full spectrum grows light comes with IR&UV light that has more red & blue than white.  Recommend coverage is 1m2 to 4m2 and height 0.5m to 2m. 51Aaq35XusL

Roleadro 300W is a nine-band lamp that contains a specialized light spectrum ratio. The precise wavelength can increase the plants’ absorption rate of lighting and helps plants grow in all stages, including seedlings to the flowering stage.  Red and Blue light increases plant’s photosynthesis, IR LED supports cell division, and UV safeguards the plants from dangerous bacteria.


  • Roleadro 300W produces a lot of red light that provides more nutrients to indoor plants as they do not get sunlight.
  • The grow light assures 12hrs to 18hrs lighting for your indoor plants and 26 to 28 Fahrenheit growing temperature for the entire year.
  • It provides an efficient photoelectric conversion rate.
  • Red light increases plant photosynthesis that plays an important role in the growth of the plant.
  • It offers an outstanding heat dissipation system at a very affordable rate


  • Strong Design
  • IR for better photosynthesis
  • High brightness
  • More blue and red light chips than white chips
  • Includes fans to reduce heat utilization


  • Some customers feel that Roleadro has lesser features
  • Do not contain UV protection glasses and cancer warning

Spider Farmer SF-4000


Because of the way the Spider Farmer SF 4000 evenly spreads light across its coverage area, we think this is one of the best LED grow lights on the market. Coverage is a huge factor in deciding whether the light is right for you.

NOTE: I wrote a full article dedicated purely to reviewing the Spider Farmer SF-4000, where I give an in-depth review and analysis of this powerful LED grow light.


The Spider Farmer SF 4000 can accommodate many plants during a single growing season. Not only that the yields are truly healthy and the light is spread evenly across the grow room floor.


  • Larger coverage area – Veg footprint is 6 x 6 ft, Flowering footprint is 5 x 5 ft.
  • Beautiful Sun-like spectrum – Blue, White, Red, and IR (660-665nm,3000K,5000K and IR 760nm)
  • Solid Design – No fans and modular which means it will last a long time – 100,000 hours.
  • Deep light penetration – Using the most efficient chips to date with an even spread will ensure better yields.
  • Dimmable features – Very bright light which is typically a good thing. You can dial down the intensity with this LED


  • A bit pricey

Mars Hydro TSW 2000W

The Mars Hydro TSW 2000w is similar to Mars Hydro TSL 2000 watt Series but adds more coverage area with a wider quantum board configuration at 3×3 feet during flowering stages. Perfect for a 3×3 grow tent, the TSW 2000w is easy to install and makes growing convenient.


From a PAR perspective, it has a powerful balance of grow lighting spectrum using balanced and natural white light, to the right mixture of red and blue grow light intensity. The PAR value falls at 910umol which is optimal for growing indoors.


  • Light-weight
  • Low heat output
  • Affordable
  • Very good spectrum
  • Quality manufacturer


  • S slight learning curve for beginners

The Best LED Grow Lights This Year!

It is very clear that the significance of an LED Grow Light is very important to grow indoor plants; especially it is useful to grow cannabis plants indoors.  These grow lights suitably contributed to high-quality crops like a flower, cannabis, etc.  Also, these LED Grow Lights made it possible for growers to overcome the challenges of growing indoor plants credibly. Every year is no exception when it comes to improved quality in grow light science. We hope you find the best grow light that 2021 has to offer.


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VOLT Grow is a newer brand, but should definitely be considered when buying LED grow lights in 2021. The FL-1 Full-Cycle LED grow light has the highest light output in the market at 2000 µmol/s with a 2.8 efficacy (720W). It is $1,049, which includes a dimming control, mounting harness and power cord, and has a 5-year warranty. They use Samsung and Osram chips and all products are UL and DLC listed. They also offer the VL-1 Full-Cycle LED grow light, which is a smaller, cheaper product at $649 for 1220 µmol/s and 440W.


Interesting. Thanks for sharing. We’d be open to reviewing them! I see you linked to them — do you work for them? If so, email us and we’ll do a full review and breakdown!


Yes, I work for VOLT Grow & we actually just cut our prices almost in half! I would love to send you more information. Please email me to get in touch. Thanks!

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