Top #10 Best COB Led Grow Light – Complete Buyer Guide 2020

Cob LED grow lights are the latest trend for growing marijuana and weed indoors in recent times. These lights have completely replaced the traditional HID lights. What does COB stands for? Answer to this question is Cob stands for chip on board grow lights, which are being deployed everywhere.

Cob lights have comparatively good electrical efficiency, lives long and good light quality. Growing your plants under the light of the best COB LED light ensures a perfect growth.

Plants require artificial light indoors to create minerals and nutrients that are important for their growth and development. Without harming your cannabis plants, they can grow the best way under these cob led grow lights. You will find many types of Cob grow lights available in the market.

But, finding the best one among the led grow lights that can increase yield from your marijuana seeds is not an easy task. We have explored various types of cob LED grow lights and have compared them against each other explaining you its features pros and cons.

This review article will allow you to choose the best-suited LED grow lights. Here are some best cob light reviews to help you choose the best one, so let’s get started!

Our Pick: we suggest CF Grow CREE CXB3590 High Intensity full Spectrum Cob Led Grow Light as one of the best cob grow light for indoor marijuana growing.

High Intensity Full Spectrum Best Cob Grow Light

Review Summary

CREE LED Grow Light

CREE LED Grow Light

Rated by: Julian H

The CXB3590 CREE LED Grow Light has a simple design and it is very effective and powerful. The grow light comes with a single CXB3590 COB LED that delivers a very a strong light.

The light is good for plants in both the vegetative and flowering phases. This is one of the latest trends of using cob led lights for growing marijuana and weed indoors.

The new professional COB LED grow light CXB3590 is used in hydroponics greenhouse tomato money plant as well as weed, helps in all the stages with full Spectrum of 380nm~780nm. It can also replace the 400W HPS growing lamp.

Each LED chips can take 120W power. Cree CXB3590 Grow LED's are not only extremely powerful but they produce the best light Spectrum for indoor marijuana plantation.

It takes the high light intensity of HPS bulbs and combines it with a high PAR output similar to Red Blue LED grow lights.

The LED driver of these lights is made by MEANWELL. It is of high quality which ensures more stability in voltage and longer life of the COB LED chips. There are more COB grow lights CXB3590 100W 400W 600W for you to choose from based of watt power as per your requirement;

we suggest this cob led grow light as the perfect light for marijuana and weed growers.


  • Light S​​​​PECTRUM 380nm~780nm
  • Replaces the 1000W HPS growing lamp.
  • The LED is made by CREE CXB 3590
  • Each LED chips can reach 120W power.
  • Extremely powerful Cree chips
  •  MEAN WELL LED Driver
  • light use USA IDEAL COB Holder
  • It has over 100,000 hours of a lifetime.
  • Big 90-degree glass lenses
  • It covers an area of 7.5-70 square feet
  • Can be hung at around 8 inches-59 inches
  • 24-hour professional service centre
  • 30 days full refund
  • 3 years warranty
  •  365 days technical support.

Things we like

  • Efficiency: 1.8 UMOLS /w
  • Lifespan: 50,000hrs
  • made of: CREE cxb3590
  • Beautiful & clean build quality
  • Waterproof (weatherproof)
  • Scalable design
  • Passive design
  • ETL Tested and Certified

CF Grow 400W Dimmable High Intensity LED Plant Grow Lamp

Review Summary

Cree CXB3590 Cob LED Grow Light

Cree Cob Grow Light

Rated by: Julian H

This new style professional LED COB light CXB3590-X4 is used for hydroponics greenhouse tomato money plants and as well as weed.

It helps in all phases growth with full Spectrum of 380nm~780nm. This is good for the beginning growth of seedlings, it replaces HPS 600W 800W growing lamp. 

The grow light is made by CREE CXB 3590 each LED chips can reach 100W power. Cree CXB3590 LED Chips are not only extremely effective but they produce the best light Spectrum for your indoor plants.

The temperature required for growing under this cob led grow light is as follows, Temperature: 26.7~30, CO2 enrichment: 1500ppm, potential.

The working environment for the light is -20~40 degree Celsius, 45%RH~90%RH. Required potential hydrogen (PH) is 5.5~6.3(soil), 6.0~6.5(wood).

Do not touch or move when the light working. Don't block the air inlet and outlet, keep air convection, don't look at the CF Grow lights directly while it's on.

Lamp should not be hanged high so that it does not weaken the energy and affect the growth cycle of the plants. At same time, light should not be hanged too close to the plants as well, or it will damage the plants. About 1 meter height above the plants is a good height.


  • Model No CXB3590-X4
  • LED (Qty): 4pcs *100W CXB3590, actual power 300W
  • Warm Light 3500KInput Voltage: 120Vac/240VAC
  • Wavelength: full Spectrum 380nm~780nm
  • Frequency: 50Hz/60Hz
  • COB Led Brand: CREE LED
  • Flux Lm: 48000lm
  • Lifetime: 50000hrs
  • Weight 2.78KG (G.W:8.9KG)
  • Product Size: 450*450*100mm
  • Cover an area of 7.5-70 square feet
  • Hung at around 8 inches-59 inches
  • 3 years warranty and 365 days technical support

Things we like

  • The full-spectrum light is very convenient
  • It has a very durable built
  • It is easy to install the light
  • It has enough brightness for young plantation or flowering plants

Full Spectrum, Dimmable High Intensity LED Plant Grow Lamp 

Review Summary

CREE CXB3590 COB Light

Rated by: Julian H

The CF Grow CREE CXB3590 200w Full Spectrum COB LED Light has LED chips that can reach 120W power. It has a very high light flow. Each of the chips produces an amazing light spectrum for your plant’s optimum growth.

This lighting lamp has the same high intensity spectrum that you find in HPS bulbs. The cob led lights nicely combine the high PAR output to offer red and blue rays.

This feature allows plant growth during all stages of plantation. It is equipped with various LED grow lights that has large 90-degree glass lenses, providing high light output efficiency. 

Furthermore, as per our testing it gives 97 percent light transmittance. You can use this light for approximately 12 hours which encourages foliage growth. The cob led grow light is expected to cover an area of 7.5-70 square feet.

We suggest you to hang the lights at 8 to 59 inches of height depending on the plant's life cycle and its required lighting requirements.

This cob led grow light helps the weed growers the best possible way to grow marijuana indoors, with suitable light spectrum that helps in proper weed growth without any harm.


  • Wavelength: Full Spectrum 380nm to 780nm
  • Expected Lifetime: 50000hrs
  • The LED driver offers high-quality stable voltage
  • There is a three-year warranty
  • 365 days of technical support included
  • The LED is made by CREE CXB3590
  • Replace the 400W HPS growing lamp.
  • CREE COB LED grow lights driver is made by MEAN WELL
  • High  quality and Waterproof
  • More stable voltage
  • 100,000 hours of a lifetime.
  •  90-degree glass lenses, high light out-coupling efficiency
  •  97% light transmittance
  • Cover  an area of 7.5-70 square feet
  • Should be hung at around 8 inches-59 inches
  • We suggest wearing sunglasses when you are under the light
  • 24-hour professional service centre, 30 days full refund,

Things we like

  • The full-spectrum light is very convenient
  • It has a very durable built
  • It is easy to install the light
  • It has enough brightness for young plantation or flowering plants

Hydroponic Cannabis Plants Growing Lighting Fixture with Full Spectrum COB 

Review Summary

Led Grow Light-900w

LED Grow Light 900W

Rated by: Julian H

The MAXGROW 900w Full Spectrum COB Led Grow Light features CREE/OSRAM led chips to form the shape of a sunflower which looks like a shape of the sun.

The built-in 105°optical holistic lens enables it to increase the light’s brightness. Unlike others cod led grow lights, these come with a daisy chain able option. This is great for sativa seeds.

The par value of MAXGROW 900w is 260 watt. These cob led grow lights have a different design from other common led grow lights.

Max Grow MG900 plant cob led grow light looks similar to a sun that combines high efficiency full spectrum COB and premium CREE/OSRAM led chips to become a sunflower module. That's why we count this into the best cob led grow light.

The color of shell is tuned in the grass green color which allows the led grow lamp to blend with plants to create a more beautiful indoor marijuana planting environment. 

Pop led grow panel use Chip on board tech as this hydroponic CREE LED grow light kits keep up with this trend. According to our testing we assure this is a full light spectrum cob led grow light, which is designed to provide the complete super efficient spectrum output.

This cob LED grow light has 105° optical lens to increase brightness level. The MG 900 led full spectrum grow light consumes only 260watt.  While, it can also replace typical 520W HPS or HID grow light fixtures. Maximum coverage is 1.5㎡. It's simple and easy to install. All MG series led grow light comes along with 365 days warranty and 30 days 100% money back guarantee.


  • Has 7 in 1 optical lens.
  • The lens angle is 105 degrees.
  • Complete Daisy Chain control
  • Features a convenient on/off switch
  • Housing of aluminum and iron for added durability.
  • Lifespan is 50,000 hours
  • 30 day money back guarantee
  • Maximum coverage is 1.5㎡

Things we like

  • Covered under a warranty
  • Easy to install
  • Daisy chainable control
  • Durable

#5. ​​​AGLEX 1200W COB LED Grow Light​​​

Full Spectrum UV IR Reflector Series Plant Grow Lamp, with Daisy Chain

Review Summary

AGLEX 1200W COB LED Grow Light

AGLEX 1200W COB Light

Rated by: Julian H

This is another best option for indoor marijuana growers. AGLEX 1200W COB LED Grow comes with strong Light and broad nature spectrum.

This lights 380-780nm light spectrum is ideal for all kinds of indoor plants VEG and flower at all growth stages. It is with High Pars value, High yields and Low heat.

AGLEX cob grow light bulb spectrum has proved to be a perfect full spectrum light for growing indoors.

The latest white COB light technology and high power double-chip LEDs is serving the users the best way. AGLEX Patented Modular Reflector is scientifically engineered to deliver an outstanding PAR readings and ideal coverage.

Its big and high rotating speed fans are applied. AGLEX LED grow lamps are much cooler and quieter than others. It comes with a UL high quality power cord.

The overall structured quality of this cob led grow light makes the whole fixture safe and more reliable. The AGLEX COB Light also comes with a daisy chain able feature which can make your plantation easy.


  • Model: AGL-1200W-C01
  • replaces a grow light 1000w HPS/MH
  • Dimensions: 13.78*9.84*2.17 inches
  • Item Weight: 6.5 lbs
  • Coverage Area: about 5*5ft
  • Avg. Power Draw: 210 Watt
  • LED Chips: High Intensity COB + Dual-Chip LEDs
  • Input Voltage: AC100-240V
  • Frequency: 50-60Hz
  • Lifespan: 50,000 hours
  • Daisy chain feature
  • UL high quality power cord

Things we like

  • Cooler and quieter than others
  • Durable
  • Easy installation
  • Double use for daisy chain

           2nd Generation LED Plant Lamp with ON/OFF Switch and Timer Function

Review Summary


Rated by: Julian H

The ROLEADRO 800W cob led grow light is another very powerful full spectrum grow light that helps you to grow marijuana indoors.

This light gives out a very good performance and has some of the most impressive features that will amaze you. This cob led grow light comes in a lower Price with Better Light. It is definitely Worth Having.

Light has centralized lighting source which helps the plants to grow with a better heat dissipation system.

This cob led grow light helps in fast growing of plants and improves your output. High quality EPILEDS LEDS, new LED technology innovation creates the most similar light as the sunlight.

These cob led grow lights have a longer lifespan and provide good care to the plants. Sunflower radiator system, make the temperature at the bottom of the chips is lower than 118.4 ℉.

It produces less heat and save energy. Light also has UL proved cooling fans with lower noise and won’t affect your daily life and rest.

The lights modular light design makes it easy to use. If a part of the light breaks, other parts will keep working. Besides that, it's easy to fix in case a part is broken.

It is very convenient to use cob grow light and allows you to set a cycle working time for it, and the plant light will work or off on your set time. Marijuana growers will love this.


  • It is a full spectrum grow light
  • It has inbuilt cooling systems that use an aluminum substrate
  • It has 2 pieces of COB LEDs
  • It has a modular light design

Things we like

  • The LEDs are very high quality
  • The modular light design ensures one cob led grow light chip continues working even one light is broken.
  • The sunflower radiating system prevents the light from overheating
  • The light has a sturdy and durable build

2 Dimmers 100W COB B400 400W for Hydroponic Indoor Plants

Review Summary

100w COB Led Grow Light

Rated by: Julian H

B400 variant of Bloom Beast cob led grow light is there in the market since 2010. So, it’s understood that their expertise and experience in manufacturing would be the best.

It’s a unique design light and its panel is built using extremely high-quality material. This light will help the marijuana growers in the best possible way for indoor weed growing.

The light has 4 cobs of 100 w each and each one is supported by an advanced multi layered convex optical glass.

This mechanism is implemented on the COB led grow light to attain a highly uniform and dense ray of light. Moreover, it also helps in getting highly optimized coverage and avoids hot spots or wastage of energy and light. Bloom Beast 400 Watt COB Grow Light spreads a 12 band full spectrum light along with vital UV and IR elements.

This light comes with two separate fully functional and user-friendly dimmer knobs, giving you the comfort of adjusting light quality and brightness according to the current phase of your marijuana plant's lifecycle. Bloom beast cob light covers area of about 3'x4' of plantation in the best form.

It will consume more or less than 250W from the wall based on the setting of dimmers. The most attractive part of this light is that it’s covered under a 5 years of professional after sale support service. Light also features multiple cooling fans and supply some fantastic heat dissipation system.


  • 2 BAND 100W COB
  • Light using convex optical lens
  • Optimize  lighting coverage,
  • Avoid  hot spots and get a full blend of light
  • Bloom Beast use UL standard driver
  • UL-approved cooling fans
  • Durable
  • Quality customer service 24 hours.
  • 30 DAYs money back guarantee
  • 5 YEARs warranty.

Things we like

  • Great quality of Cobs
  • Suitable for all phases of growth.
  • Massive Coverage
  • Well placed cooling fans
  • Best in the market warranty

with UV IR 3 Dimmers Bloom Beast A900 for Indoor Marijuana Plants

Review Summary

A 900W LED Grow Light

Rated by: Julian H

Bloom Beast 900W COB led light secured its first place in the list of best Full Spectrum COB LED Grow Light. These lights are designed using extremely reliable and durable material with top performance making it a good light. 

As per the user reviews, it’s stated that this cob has helped the growers to attain around 20-25% better yield as compared to traditional led grow lights.

Most exciting part is a 13 band spectrum along with UV and IR, which is ideal and well suited for the perfect and well-sustained growth of your marijuana plants.

The optical lens of this cob led grow light helps in the even distribution of the highly dense light for green weed plants. Moreover, maximum PAR value achieved by them from this LED grow light is 856 UMOL, which is excellent regarding effectiveness in a specific area.

It will help you in saving a good amount of money on electricity bill as it draws more or less than 400W as it depends on dimmer settings and your way of utilization.

The coverage area of this cob led grow light is around 5’x4’ of your grow space. Bloom Best A900 900 Watt COB LED Grow Light you’ll get a 5 years warranty. We suggest this light as the best light for marijuana growers.


  • Bloom Beast LED grow light produce over 20% high yields
  • stays cool
  • Uses a reasonable amount of electricity.
  • 13 band full spectrum LED grow light
  • Use multi-chips COB LEDs
  • Bloom Beast is specialized in only LED grow light 
  • LED grow light with UL fan highly efficient
  • heat dissipation system
  • 100% adjustable brightness with 3 dimmers.
  • Offers 5 years warranty.

Things we like

  • Fabulous cooling
  • An elegant design
  • Highly durable built
  • 20-30% more yield

​#9. Dimmable 400W COB LED Grow Light

     Dimmable 400W 12-Band Full Spectrum Max Bloom X4 Plus LED Grow Lamp

Review Summary

400W COB LED Grow Light

Rated by: Julian H

Max bloom cob led grow light is popular since 2008. This X series is their 8th generation of lighting products.

As per our experience its quality is the best and people don’t stop praising it when you ask them. This light features 48 LEDs of 5W each and 2 big sized CREE XTE COB Chips in the middle each of 100W.

It’s a mix of LEDs and COBs, and that’s what makes it an amazing piece for indoor marijuana growing.

Max bloom’s intention is to supply their customers with one of the Best COB LED Grow Light for indoor growing.

This cob led grow light comes with two separate dimming knobs on the side, which allows you to adjust light effectiveness and brightness according to your plants growth phase.. Max bloom X4 comes with a true 12 band full spectrum light including IR which helps in boosting leaf building process of your plants.

The spectrum of light encourages the photosynthesis process throughout your weed lifecycle, which also increases 20-30% of your output.. Max bloom X4 Plus 400W COB LED Grow Light covers an indoor grow space of around 4’ X 4’ and should be placed at a height of 24”.

The cob led grow light is equipped with multiple cooling fans. Max bloom 400W COB features a modular design for easy maintenance and replacement of plants.The best part of this light is manufacturers of max bloom provide 5 years after sale customer care support and warranty.


  • 12-band full spectrum UV&IR with high quality
  • Light design with high lumen LEDs
  • X series LED grow light COB dimmable
  • Easy maintenance
  • Optical lens with silicone rubber
  • Led grow light dimmable 0-100% intensity control.
  • Comes with hanging kits for easy installation.
  • 30 days money back guaranteed
  • Plus 3 months free replacement
  • 5 years warranty

Things we like

  • High quality and unique build and design
  • Large coverage area
  • Cost savvy in longer run, from power efficiency point of view.
  • Suitable overall lifecycle of indoor plants
  • Easy  assembly and disassembly of light
  • Effective cooling
  • Covered under a warranty

        Plant Growing Light Lamp Panel, Ultra-Thin No Fan No Noise

Review Summary

360W LED COB Grow Light

Rated by: Julian H

This cob LED grow light features 4 PCs of high-quality COB chips each of 100W on its panel that are made in Korea.

It includes universal White, Red and Blue colors along with UV and IR elements.  Blue: Red ratio in its lighting effect is really good, which makes your weed plantation grow healthier.

It also promotes plants growth and makes them grow faster. The coverage by Cana grow Newest 360W is around 8 square feet.It’s adjustable according to your preference.

The power consumption by Cana grow Newest 360 Watt COB LED Grow Light is around 120w.  Therefore, it saves a small amount of money on electricity bill throughout its use.

Its silk design and thin panels makes it a masterpiece. Material used in for its designing is anti rust, dust and moisture proof which enables hassle free cleaning.

However, light does not offer any daisy chainable feature or dimmable and water proof feature. But the most considerate part of this light is that it provides 3 years of hassle free warranty and customer support.


  • Korean LED chips
  • Universal Blue Red IR UV and white light.
  • Designed  with high and low slot cooling structure
  • Grow  lights are coated with a black cooling coating
  • No fan, and no noise
  • Made of air aluminum  and tempering glass cover
  • Anti rust, dust-proof and moisture-proof
  • Comes with hanging kits for easy installation.
  • Comes with hanging hooks and adjustable wires
  • Hung  at height about 0.8~1.2 meters high
  • Convenient  to use
  •  up to 50,000hrs lifetime
  • No  maintenance cost
  • No  need professional installation,
  • Can  replace traditional 400 watt HPS/MH
  • It has 43500 flux lm
  • 24-hour professional service centre
  • 30 days full refund and 3 years warranty
  • 365 days technical support.

Things we like

  • Thin body and compact in nature
  • Well functioning and high quality COBs
  • Fabulous spectrum
  • Decent coverage
  • Lower power consumption
  • Good  customer support


It's hard to find a good quality and inexpensive LED product.  So, if you're looking for good quality COB LEDs for indoor marijuana production.

We recommend the COB LEDs. They are well designed COBS with quality LEDs and a MEANWELL driver.

Cob Grow lights are also packed with all special features that other COB lights don’t offer like dimmable light output, full spectrum wavelengths. These are the perfect grow lights for indoor marijuana plantation.

We also suggest ROLEADRO COB LEDs. They produce good light output and have a 2-year warranty. These COBs could be a great introduction for small to midsize hydroponic growers. Wish you a happy marijuana growing indoors.

About is a full-fledged knowledge base websites made to share information for growing indoors and understand the basic requirement for reap marijuana. Usually the information suggested everywhere is biased and need for an authentic resource emerged.
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