Best COB LED Grow Lights – Full 2019 Review

COB LED grow lights are regularly outperforming normal LED grow lights of similar wattage. The best COB LED Grow lights can compete with normal LED grow lights with 10% higher wattage output.

Many people are switching to LED grow lights from high pressure sodium or metal halide grow lights. But one very important question to ask yourself is if you should spend a tiny bit extra and opt for a COB light.

So here at 420 Expert Guide, we’re going to review some of the best COB LED Grow Light that can create wonders in your gardening space.

It would be great if you’re familiar with all the aspects and must to consider factors regarding COB Grow lights.

It’s latest updated version for choices to make in 2019 that could help you well in getting better results.

Buyer’s Guide For COB LED Grow Light

The Term COB LED

COB stands for Chips On Board – it doesn’t do a good job implying the benefits or differences of a COB light. To understand the working mechanism, it’s important to know the exact characteristics of COB LED Grow lights.

There is a saying “Unity is Strength”. That also holds true for LEDs. The only difference between a COB LED and regular LED is the design. COB LEDs fit more LEDs onto a single chip, allowing for higher intensity and lower power consumption.

A more technical explanation of a COB LED is a “technique of electronic packaging where multiple chips will be bonded together on a single substrate surface to produce intense light.”

Advantages of COB LED Grow Lights

  1. They provide much denser and intense light compared to other standard “SMD” LED Grow lights. It’s due to the packaging of multiple LEDs on a single large-sized chip.
  2. As the source of light will be centralized in COB technology, it will generate lesser heat compared to traditional light sources.
  3. Lower electricity consumption is one of the great benefits from COB lights since it operates on a single diode which will be combined with multiple diodes.
  4. Much more modular design for the panel is possible in COB grow lights.
  5. COBs are more reliable as far as lifespan is concerned.
  6. COBs are capable of spreading light which can be easily absorbed due to higher penetration rate.
  7. Less light loss is one of the great thing about COB LED Grow Lights. Provide your plants with a quality light that is usable up to the maximum extent.

Drawbacks of COB LED Grow Lights:

  1. Overall the technology is better than standard LED grow lights. The downside can be if you’re on a budget, because these lights generally cost a bit more than standard grow lights. As they say, you get what you pay for. In the end it’s totally worth it because you’re getting a better spectrum and higher light intensity.

How COBs are better for Indoor Marijuana Cultivation?

As we always state in our buyer’s guide regarding indoor weed cultivation, one vital element for your plants includes light quality with essential bands, a well-balanced environment in grow space, regular watering, and fertilizers for nutritional benefits.

Many of the more modern and high quality COB LED lights have white wavelengths in their spectrum. The white spectrum is made up of green, yellow and orange wavelengths. Studies have found that adding white spcetrum to Red and Blue wavelengths increased growth in tomato plants by 12-16%.¹ So COB LEDs produce a comparatively better light spectrum compared to normal LED grow lights.

The design of the diodes being closer together enables the output to be more powerful and more energy efficient. Many COB LED grow lights also include an intensifying lens that greatly increases PPFD readings. Regular LED grow lights can’t use these because the LEDs are scattered around compared to bunched together.

Side by Side Comparison: COB LED vs Normal LED:

Because the COB LEDs are more intense, they naturally have a stronger PPFD value. Below we compare the PPFD value for two equal watt output LED grow lights. One is normal LED, the other is a COB LED.

best led grow lights

Both are well known LED grow light brands – King Plus and Meizhi. You can see the King Plus 600w normal LED has a PPFD value of 430 umol at 18 inches. Incredibly, the Meizhi 600w COB LED light has a 61% higher PPFD reading at the same height! That’s 694 umol at 18inches. There is simply no contest.

Factors to Consider While Buying a COB LED Grow Light

In this era of a competitive market, many manufacturers are claiming that their products are capable of creating wonder in your grow space. However, very few are right on their claim, and you shouldn’t spend your money in vain by trusting such fake claims.

  • Stay away from unknown or fake brands.
  • Look for real quality and capability of a panel, mainly via PPFD reading.
  • Don’t compromise on quality due to budget. There are budget-friendly options available for you which can provide real light. However, you might have to compromise on coverage area or other expectations but go for one which can provide real quality
  • Consider actual power draw as a primary concern instead HPS replacement. Yeah, those replacement figures are useless.
  • Hunt for the best COB LED regarding the build.
  • If you’re paying high expect some premium features such as waterproof build, built-in timer, wi-fi controller etc.

To help you with selecting the best and avoiding fake claims our team sorted around 10 top rated Real COB LED Grow lights for your marijuana cultivation. Yeah, these are the LEDs you can rely on.

Hope you’ve got all the points listed above.

Review of Best COB LED Grow Lights on the Market

Here we have reviewed top 10 Chip On Board (COB) LED Grow Lights for you. Take a look.

Growstar 150W UFO COB LED– Grow Light For Beginners

best led grow lights

Compact in size yet works like a beast inside your growing box. Yeah, the very first light that we’re going to review is from Growstar. You might have heard its name as it’s quite famous for performance and quality light.

Growstar 150W COB LED grow lights features a UFO style of lighting and comes in circular body shape.

This COB variant of Growstar is an upgraded version of their traditional LED Grow Light.

To provide their customers with satisfying performance and a high quality lighting solution Growstar integrated a CREE COB chip which is featured in the center of the light panel.

Apart from a single centralized 30W CREE COB they equipped several standard 3W bridgelux/epistrar chips.

If we look at Growstar COB LED grow light from a light spectrum perspective, it provides 12 band full spectrum light, including ultraviolet and infrared – which is impressive for a low output LED grow light.

Growstar UFO COB LED grow light will uniformly cover 2’ X 2’ grow space from the recommended height of 24”.

Growstar COB LED also helps you save your money in the long run by utilizing a mere 62W from the wall for its functioning.

You’ll notice a high speed and silent cooling fan on its backside, which helps in keeping your plant’s surroundings fresh and cool.

In rare cases like with most grow lights, failure will occur and Growstar is always there to back you up with their high-quality customer service. They offer a 30 days money back guaranty for unsatisfied users and 2 years of warranty.

It’s one of the best cheap LED suitable for indoor marijuana cultivation in COB technology.

Click here to see reviews and prices for the Growstar 150W on

Pros and Cons of Growstar 150W COB LED Grow Light

  • Fair Price for people with tight budget
  • Centralized placement of CREED COB for focused light
  • Intense and brighter light
  • Full spectrum output including UV and IR
  • Effective coverage
  • Energy afficient as consumes less power
  • Quiete and cool operation
  • Cultivator oriented support and service
  • Not daisy chainable
  • Barebones light with small coverage area, unless you buy more than one.

Specification Details of Growstar 150W COB LED Grow Light

  • Dimensions : φ6.9” x 2.4”
  • Weight : 2.1 lbs
  • Spectrum : Full spectrum Along with Hint of IR
  • Actual Power Draw : 62W
  • Coverage : 2’ X 2’
  • Voltage : 100V – 240V
  • Lifespan : 50000 Hours
  • Warranty : 2 Years Service and support

If you’ll compare price and features, then it has everything that’s usually offered in a good budget COB LED Grow light. Look at this reviews of existing users who have praised the manufacturer for providing such a good quality product.

Looking at decent coverage, power efficiency, quiet operation and hassle-free functioning we can’t resist ourselves from recommending this fantastic grow light by growstar.

Click here to see reviews and prices for the Growstar 150W on

Anjeet 1200W COB – Cost Effective Grow Panel

best led grow lights

Our second choice for budget-friendly COB LED Grow Light goes to Anjeet 1200W COB.

This powerful COB LED grow light by Anjeet is a bit under-rated, and that could be the only reason why you didn’t hear about its quality and performance yet.

With a tremendous build and design, it’ll attract you at a very first glance. However, it’s not the reason behind its inclusion on our review list.

Anjeet 1200W Features 4 PCs of CREE COB on its board each capable of producing light equal to a 1200W HPS panel.

Due to the packaging of multiple numbers of LEDs in a single chip this COB becomes a powerpack performer.

Centralised COBs improves uniformity, and luminous efficiency of this grow panel. You might have noticed that luminous efficiency and spectral uniformity is the main factor behind boosting the growth and health of your plants during vegetation as well as during blooming.

As far as spectrum is concerned, Anjeet COB is a full spectrum COB LED Grow light which spreads all the necessary bands for weed plants. Moreover, a well-balanced ratio of blue and red color makes it a great grow light.

However, the higher amount of red color will act as a boon for your plants in the blooming phase.

Light is suitable for all kind of plants in all the phases of a plant’s lifecycle. It doesn’t matter whether they’re passing through vegetation or blooming, it’s going to help them.

If you’re focusing on coverage area and that’s your primary concern, then Anjeet 1200W COB LED Grow Light is capable of covering 4’ X 4’ of grow space from the ideal height of 36”.

However, you’re free to increase or decrease hanging height to achieve more or less coverage according to your choice.

Moreover, in such cases of experiments, it would be great if you keep an eye on the progress and movement of your plants to be on the safe side.

It also features a daisy chaining port where you can attach another grow light without the need of an extra socket in your power outlet.

People who’re curious to know about its power consumption would be happy to see that it’ll pull around 320W at maximum from the wall.

Well managed heat dissipation system in Anjeet 1200W COB ensures safety and stability of your marijuana plants throughout its lifecycle. Yeah, it’s time to say NO to heat blowers.

To provide their customers with a hassle-free and worry less experience of indoor weed cultivation Anjeet offers 3 years warranty and 30 days money back policy.

Yeah, in case, they fail to prove their worth in your grow space within 30 days, you’re free to raise a refund claim.

Click here to see reviews and prices for the Anjeet 1200W on

Pros and Cons of Anjeet 1200W CREE COB Full Spectrum LED Grow Light

  • Attractive and elegant design
  • Attractive price
  • Full spectrum output
  • Highly effective light for blooming
  • Massive coverage area
  • Fabulous Energy efficiency
  • Daisy chaining ability for expansion options
  • Top rated heat dissipation system
  • Quality support for worry free growing experience.
  • PPFD readings could be higher for the wattage.
  • Timer isn’t included in the package.

With massive coverage and highly suitable light to your marijuana plant’s, it is going to be the best companion for your next harvest.

It has a reasonable existing customer base and people who’ve experienced high-quality yield from their indoor plants, and they are recommending this grow light to all the fellow community members on various forums and social platforms.

If you’re concerned with features and budget but don’t want to compromise on either of them, then the Anjeet 1200W CREE COB LED Grow Lights is for you.

Click here to see reviews and prices for the Anjeet 1200W on

Phlizon 2000w COB LED – A Powerful Choice

best led grow lights

Phlizon is another well known LED grow light manufacturer. They have several COB options ranging from 1000w to a monstrous 3000w output.

The 2000W variant has the following LED distribution:

Upon further inspection you’ll notice the full PAR/PPFD measurement at 18″ is 2161 umol/m²s. You just don’t see readings like that on normal LEDs yet many of them are in the same price range. Talk about value.

Did I mention it includes UV and IR diodes as well? This is one of the best full spectrum COB LED lights.

Moreover, it’s perfect as a stand-alone unit for the entire grow cycle of your cannabis plants.

You might be concerned about all those LEDs costing you on your utility bill, but you’d be wrong. This LED Grow light pulls only 451W from the wall.

Now, comes the critical part and we all know that it couldn’t be anything else other than coverage ability. The Phlizon 2000 watt COB is capable of putting a smile on your face by covering 4.1’ X 4.1’ of grow space comfortably. With that PPFD value you may even be able to stretch it a bit further.

As an additional feature on grow panel, you’ll have an option to expand your grow without worrying about an extra socket in your power outlet. Yeah, it comes with a built-in daisy chaining function, where you can attach another grow light without any hustle.

To keep things under control and environment well-balanced this grow light is equipped with four cooling fans, and aluminium heat sink works like a charm.

In a rare case, if any failure occurs then Phlizon is there to back you up with their quality support. Yeah, they provide a 2 year warranty.

Click here to see reviews and prices for the Phlizon 2000 watt COB LED grow light on

Pros and Cons of Phlizon 2000w COB LED Grow Light

  • Modular and effective design.
  • Well placed CREE COBs.
  • Full spectrum ability.
  • Best PPFD values in the segment.
  • Highly Effective Light.
  • Massive coverage area.
  • Cost Savvy from energy consumption point of view.
  • Keeps temperature balanced.
  • Easy to replace modules.
  • Not waterproof.
  • No remote control.

Whatever we select and review in our articles is to help our readers in choosing one of the best COB LED grow lights.

We avoid reviewing some crap and fake claimed products. In case of Phlizon, we reviewed opinions from plenty of people regarding their experience using this tremendous COB LED Grow Light.

Current owners have said the Phlizon 2000w kicks ass. A few reviewers who have owned several lights compared the Phlizon 2000w to another popular brand, the Optic LED Gen 3 Optic 4. They said the Phlizon has now replaced the Optic LED as their favorite light. The Optic LED costs hundreds more for a similar output.

Looking at quality, capabilities, and user response we’d surely recommend you to check out the Phlizon 2000W COB LED grow light for a tremendous growing experience.

Click here to see reviews and prices for the Phlizon 2000W COB on

Meizhi 300W Full spectrum COB – Compact yet powerful

best led grow lights

This COB LED grow light is from MEIZHI. MEIZHI is famous for its budget-friendly and quality oriented product.

People often admit that grow lights by MEIZHI are eco-friendly, and they care about the plant’s safety as well.

In traditional LED Grow Light production MarsHydro and BestVa were two main competitors of MEIZHI but they’re not yet seen with COB models.

As far as a 300W variant of MEIZHI COB LED Grow Light is concerned, it is packed with durable and quality materials manufactured by some of the well-known brands in the LED field.

To create an optimal spectral effect for betterment in your plant’s progress and growth it is equipped with a single CREE COB in the center surrounded by multiple small-sized LEDs for better light quality.

If you’re a spectrum lover, then you’d be glad to know that it offers a complete full spectrum of light, and MEIZHI has kept more frequency of red wavelength in this grow light.

With a decent PPFD value of 417 uMol from 18” is decent for a light with this power. To achieve this, the Meizhi 300w COB LED

It’ll only pull around 130 watts from your outlet.

Effective coverage area by MEIZHI 300W Full spectrum COB Grow Light is of 3.5’ X 3.5’, but we recommend you to decrease it further to achieve best results from your plants.

Its daisy chainable so if you’re looking to use this light to cover a larger space, you can connect multiple lights. You can always upgrade to the 600 watt model as well instead of more 300 watt models. You’ll notice a secondary power socket on the back side of your COB Grow Light right beside cooling fan for the daisy chain connection.

Dimmers or mode switches are missed in the build, but at this price range it’s acceptable.

As we stated at the very beginning of this COB LED Grow Light review, MEIZHI is known for quality and durability. So, it’s rare to face any issue with their highly researched and professionally built products.

However, in case you still have an issue with their product then they are there to back you up with their support. A 3 year warranty is being offered with this grow light. Meizhi claims damage rates are close to zero.

Click here to see reviews and prices for the MEIZHI 300W on

Pros and Cons of MEIZHI 300W Full Spectrum COB LED Grow Light

  • Affordable COB Grow Light on the market
  • Brand is known for budget friendly yet quality products.
  • A Full spectrum brightness
  • Decent coverage capability especially if daisy chained
  • Highly power efficient
  • Daisy Chainable
  • Worry-less experience with 3 years local support.
  • Not waterproof
  • Don’t feature any dimming nob or mode switch

Looking at commitment towards quality and highly satisfied customer base in their regular LED Grow Light products, we can imagine the power and performance of this Best Budget COB LED Grow Light.

Yeah, from our side it’s a thumbs up for deciding to buy a Meizhi 300W COB LED Grow Light.

Click here to see reviews and prices for the MEIZHI 300W on

Roleadro  800w COB LED grow light

best led grow lights

Roleadro succeeded in gaining the trust of the people in their products with their old 400W COB variant. To make it more awesome, they’ve upgraded their previous version with improvements in light quality, COB placement, Spectral abilities and coverage space capabilities.

Yeah, this is the latest and upgraded version of COB from Roleadro and capable of helping you in achieving your goal concerning good quality of yield.

Roleadro 800W COB is equipped with CREE COB chips on the board. These COBs are further supported by an optimal secondary lens which improves reflection and produces evenly distributable light.

Roleadro claims that it has a higher PPFD and lumen value compared to other similar COB LED Grow Lights, although they don’t provide a specific reading which is an obvious negative. Looking at user responses they seem to be satisfied with the light nonetheless.

Roleadro’s upgraded version features a full spectrum and comprises all the essential bands of shades in its lighting. However, no mention for UV or IR is found anywhere for this grow light.

A decent 8:1 ratio can be seen in the Red: Blue spectrum balancing. With this ratio, you can easily rely on the Roleadro 800W COB for getting large resinous flowers from your cannabis plants.

With an ideal wavelength of the spectrum ranging in 380nm-780nm, it becomes suitable for all phases of your indoor plants’ life cycle.

For coverage, it can provide a quality light for a grow space of around 3’ X 3’ from the height of 24” during flowering.

Maximum achievable coverage can be extended up to 4’ X 4’ during vegetation by increasing the height of LED from your cannabis canopies.

Above all, it’s daisy-chainable so you can attach another grow light with it in no time without the need of extra wall sockets or extension cables.

If you’re more concerned about power efficiency, then it is an ultimate power saver and helps you in saving much on the electricity bill in the longer run. The Roleadro 800w COB LED grow light will pull around 200W from your outlet.

To avoid the hassle of purchasing supplementary inline fans and another cooling system, Roleadro 800W COB LED grow light is equipped with multiple cooling fans and a well-researched radiator system.

30 days money back guarantee and 2 Years service and support ensure a worry-free indoor gardening experience with this one of the best cob led grow light on the market.

Click here to see reviews and prices for the Roleadro 800W COB LED grow light

Pros and cons of Roleadro upgraded 800W COB

  • Very affordable COB LED grow light
  • Decent coverage
  • A full spectrum effect
  • Best in the segment coverage area
  • Modular design with secondary optical lens
  • Daisy chainable to let you expand grow space in future
  • Marvellous cooling ability and heat dissipation system
  • Satisfaction oriented customer service and support
  • No UV/IR spectrum.
  • It’s not waterproof.

Yeah, with best in the segment yield results, spectrum, design and build and heat dissipation Roleadro upgraded 800W COB LED Grow Light becomes a definite to consider cob on the market.

If you’re a beginner or intermediate indoor cultivator and want to spend your money on a useful COB only, then Buy Roleadro 800W COB LED Grow Light. You won’t regret, and that’s the promise.

Click here to see reviews and prices for the Roleadro upgraded 800W COB on

Canagrow Newest 360W COB – Unique in All Aspects

best led grow lights

Fanless new and advanced version of COB LED Grow Light by Canagrow has definitely struck our interest, and it should strike yours too. Canagrow seems to be disrupting the COB LED grow light market by making their light thinner than all others.

You don’t see disruptive innovation too frequently on this market for some reason, although Canagrow has taken a totally different direction. It’s obvious in this 360w COB LED grow light’s design. Canagrow uses a heat resistant coating and a unique aluminum alloy heat sink. It’s hard to believe but take it from the customers who’ve given this COB LED grow light a damn near perfect review rating.

Let’s explore this magical grow light.

This grow light features 4 PCs of high-quality COB chips, each 100 watts. These are high quality chips manufactured in South Korea. These COBs are similar to CREE CXB3590 COBs up to the some extent. However, it’s not CREE CXB3590 COB LEDs.

As far as spectrum is concerned, it includes universal White, Red and Blue colors along with UV and IR elements. Canagrow states that it’s a full spectrum LED Grow Light.

Blue to Red ratio in this setup is wonderful. Yeah, it makes your plants greener, and healthier. It also boosts plants growth and makes them grow faster compared to other cheap led grow lights.

best led grow lights

If you’re more curious to know about coverage by Canagrow Newest 360W, then it’ll be enough for a growing space of 4’x4′. It can be adjusted according to your preference, but that’s the recommended coverage.

People interested in the power consumption of Canagrow Newest 360 Watt COB Grow Light will be happy to see that it only pulls around 120W from the wall.

Yeah, it helps in saving a small amount of money on electricity bill throughout its use.

Body build and materials are anti-rust, as well as dust and moisture proof, eliminating the need to constantly clean the grow light.

Unfortunately the thin design comes with one sacrifice being you cannot daisy chain this grow light.

Regardless, even some of the best 600W traditional LED Grow Lights fail to beat Canagrow in terms of the performance and yield.

After sales support is incredible and they provide 3 years hassle free warranty and customer-oriented support and suggestions.

Click here to see reviews and prices for the Canagrow Newest 340W on

Pros and Cons of Canagrow Newest 340W COB LED Grow Light

  • Slick and attractive design
  • Thin body and compact in nature
  • Great spectral abilities
  • Well functioning and high quality COBs
  • Intense and denser light array
  • Decent coverage
  • Elimination of fans and inclusion of high and low slot black coated cooling structure.
  • Lower power consumption
  • Long warranty
  • No Dimmer or daisy chain.

With the elimination of cooling fans, they’re succeeded in making of a slick and compact COB LED grow light. Yeah, it’s rare, and an entirely new invention in the LED Grow Light sector.

Looking at its abilities to provide quality light and decent coverage at very low scale power consumption we’d surely recommend you Purchase Canagrow 340W Newest COB LED Grow Light if you’re interested.

Click here to see reviews and prices for the Canagrow Newest 340W on

BloomBeast 520W COB LED Grow Light

best led grow lights

This is the 520w COB LED grow light from BloomBeast. We’ve reviewed their other grow lights and found them to be very capable – this model is no different.

BloomBeast has been around since 2010. You may imagine they have considerable expertise and experience in manufacturing well-suited Grow Lights for indoor plants.

An eye-catching design and a panel built using high-quality material makes it outstanding comparably.

Let’s explore this fantastic masterpiece in depth to understand the benefits and why you should take one home if it suits your needs.

At a very first glance, you’ll notice 84 COBs at 5W each plus one 100w on the middle of this Bloombeast COB Grow Light. The lights are completely dimmable so you can adjust for any stage of plant growth.

This mechanism is implemented on the COB placement to achieve a highly uniform and denser array of light. Moreover, it also helps in getting highly optimized coverage and avoids hot spots or waste of energy and light.

People wondering about the BloomBeast’s spectrum quality would be happy to know that BloomBeast 520w COB Grow Light spreads a 13 band full spectrum light mixture of red, blue, UV, IR and white LEDs.

With two separate fully functional and inherently user-friendly dimmer nobs it gives you the comfort of adjusting light quality and brightness according to the current stage of your marijuana plant’s lifecycle.

Standard LED drivers make it a reliable and durable COB LED Grow Light for more prolonged use.

BloomBeast 520W COB Grow Light will cover around 3’ X 4’ of grow space effectively. However a strong PPFD reading will enable you to hang it a bit higher if so desired.

From power efficiency point of view, it’ll pull more or less 210W from the wall based on the setting of dimmers. Not bad for a light putting out 520 watts.

Tired of your current heat blowing grow panel? The BloomBeast 520W COB LED Grow Light features multiple cooling fans and is fitted with a fantastic heat dissipation system.

It’ll keep your grow space well balanced and will prevent any harm to your plants.

If you face any trouble Bloombeast is there to back you up with their professional support for a substantial time frame of 5 years. This is the best warranty on the grow light market and it’s one of the reasons we love this Bloombeast.

Click here to see reviews and prices for the BloomBeast 520w on

Pros and Cons of BloomBeast 520w COB LED Grow Light

  • Top Notch build
  • Great quality of COBs
  • 13 Band Full spectrum Along with white, UV and IR light.
  • Denser and effective light for achieving better results in terms of yield
  • Suitable for all phases of growth.
  • Massive Coverage
  • Separate dimming switches
  • UL Certified Drivers
  • Well placed cooling fans
  • Best on the market 5 year warranty
  • Not waterproof
  • Needs safety glasses to prevent harm to vision of human eyes.

We’ve researched reviews of people who’re using the Bloombeast 520w COB LED grow light for at least 6 months. They’ve commented positively on the cool quiet operation of the light. Others admire the seedling/veg/bloom switches as well as canopy coverage.

Click here to see reviews and prices for the BloomBeast 520W on

Canagrow CXB3590 200W COB – Modern COB For Indoor Gardening

best led grow lights

Here’s another best COB LED grow light from Canagrow. With the placement of the latest CXB3590 CREE COBs on the panel Canagrow has something fabulous to offer to you regarding performance and capabilities.

It is equipped with 2 massive and power pack CXB3590 CREE Chips capable of providing you with a 400W equivalent light.

Canagrow 200W COB LED uses some advanced techniques of LED packaging on the board and improves the quality of light.

Spectrum quality of this Canagrow COB LED Grow light can be imagined by a most important wavelength range of 380nm-780nm. Yeah, it is a full spectrum LED grow light by Canagrow.

Canagrow 200W COB features a highly durable optical lens on its front side. This optical lens improves coupling efficiency and boosts the light transmittance up to 97%. Yeah, that’s an incredible thing concerning Canagrow CXB3590’s light intensity and brightness.

Thanks to the professional research team and long-term thinking of Canagrow, if you need to replace a COB Chip in future you can replace it manually with the weld free design.

Functioning of this Canagrow CXB3590 200W COB is at its best due to high quality LED drivers from MeanWell. This COB LED grow light is waterproof which is a rare feature in the LED grow light market. That’s one reason we chose it as one of the best COB LED grow lights.

Now let’s talk a bit about its coverage and power efficiency.

best led grow lights

As far as the illumination area is a concern, Canagrow CXB3590 COB LED can help you to achieve a decent footprint for around 16 sq ft. You can count on it for a 4’ X 4’ of grow space. Canagrow suggests hanging these grow lights at 1~1.2 meters in the seedling stage, 0.8~1 meters in the growing stage, and 0.5-0.8 meters at the flowering stage.

Daisy chaining capability will help you to expand coverage area in the future.

Moreover, if you’re curious to know its power draw, then it’ll draw around 200W from the wall.

However, it has a dimming nob from where you can adjust the amount of light according to your plant’s needs. Yeah, it also helps in decreasing actual power draw up to some extent.

For cooling and heat dissipation Canagrow CXB3590 COB Grow Light is equipped with two well functioning cooling fans.

However, if you’re planning to use multiple LEDs inside a single grow tent, then we’ll recommend to supplement your grow space with an inline fan or some good quality exhaust system.

Their professional support will tackle all your problems smoothly for a term of 3 years. Also, they also offer a 30 days refund policy which ensures that they’re offering something fabulous enough to be confident.

What’s the difference between this 200w COB LED from Canagrow and the 360w model reviewed earlier, since the price is almost the same? This is a popular question from some people, and the answer is COB LED type. The 360w model has off-brand korean made LEDs with a low-heat design, while the 200w model has top shelf CREE LEDs that require fans for cooling. Both have very good reviews but the main difference is like buying name brand or generic.

Click here to see reviews and prices for the Canagrow CXB3590 on

Pros and Cons of Canagrow CXB3590 COB LED Grow Light

  • Fabulous in terms of build
  • Non-welded COB Holders for easy replacement of COBs
  • Marvellous spectrum and brightness
  • Well balanced Red:Blue ratio.
  • Decent Coverage and PPFD Values
  • Dimmable COB LED Grow Light
  • Daisy Chainable
  • Effective Cooling
  • Durable LED Drivers from MeanWell
  • Longer Lifespan.
  • Professional Support for 365 Days of the year
  • Keep it away from dripping water
  • It don’t have timer or any other remotely operating controllers.
  • A bit pricey but it is worth it.

Canagrow is offering reliable and trustworthy products to indoor cultivators and hydroponic enthusiasts, regardless of their specification needs.

You don’t have to take it from us, simply turn to the satisfied customers who leave great reviews for Canagrow COB LED grow lights. Some of the glowing reviewers say how they wish they could trade all their lights for this model. Another one said they are blown away and 100% recommend. Combine those reviews with product quality and you won’t be let down if you purchase this light. We recommend Canagrow CXB3590 COB LED grow light to people with an average coverage expectancy of 4’ X 4’ and power draw expectancy around 200W. This is one of the best COB LED Grow Light for your marijuana plants.

Click here to see reviews and prices for the Canagrow CXB3590 on

Maxbloom 400W X4 Plus COB LED Grow Light – Best for Indoor Cannabis Growing

best led grow lights

Maxbloom has been in the grow light market for over 10 years. Their X series is their 8th generation lighting product.

You can imagine how much refinement has gone into their products by this point, and that’s why we’ve included it in our list of best COB LED grow lights.

As an established brand on the market they know what people expect from their products and what’s best for indoor growing solutions.

The Maxbloom X4 plus COB LED grow light features 48 LEDs at 5W each and 2 massive sized CREE XTE COB Chips in the centre each of 100W.

Yeah, it’s a combination of LEDs and COBs, and that’s what makes it a magical piece for indoor growing. Maxbloom’s intention was to supply their customers with one of the Best COB LED Grow Light for indoor growing.

It comes with two separate dimming nobs on the side from where you can adjust light effectiveness and brightness according to your plant’s growing phase.

Maxbloom X4 Plus features a true 12 band full spectrum light including infrared (IR) which helps in boosting the leaf building process of your plants.

This COB LED grow light will provide solid coverage of about 3’x3′ at 24″, and you can always upgrade to the 800W model if you need more.

If you’re serious about cooling and temperature and don’t want to bring a heat blowing COB home then MaxBloom is for you as it is equipped with multiple cooling fans to keep it constantly cool.

Maxbloom 400W COB features a modular design for easy maintenance and replacement of plants. Yeah, you can easily replace COBs on your own if needed.

Maxbloom X4 plus pulls around 200W of electricity from the wall. However, it depends on your use. 200 watts is the power draw for maximum utilization of the light by turning both veg and bloom nobs to the maximum.

Even in future if you run through any failure, you can contact max bloom for 5 years. Yeah, they’ll help you in resolving your issue on sooner bases.

Click here to see reviews and prices for the MaxBloom X4 400W on

Pros and Cons of MaxBloom X4 400W COB LED Grow Light

  • High quality and unique build and design
  • A real 12 band full spectrum with UV and IR
  • Highly bright and dense light
  • Larger coverage area
  • Cost savvy in longer run, from power efficiency point of view.
  • Two separate dimmer knobs for convenience
  • Suitable overall lifecycle of indoor plants
  • Modular design makes assembly and disassembly of light easy
  • Effective cooling
  • Best on the segment warranty
  • No daisy chaining.

As Level of quality being offered to the customers is one of the main reason for this LEDs inclusion in our review of best cob led grow light on the market.

If you can spend a decent amount of money on quality and towards the real growth of your plants, then this premium quality product is for you.

Yeah, if you’ll think about the long run, then it’ll return each of your penny spent on it by producing 20-30% more yield from your plants.

Yeah, from our side, MaxBloom X4 Plus COB LED Grow Light is an absolute good to go with a premium product for people with 4’ X 4’ of the area.

Click here to see reviews and prices for the MaxBloom X4 400W on

Bloombeast A900 900W COB LED Grow Light – Editor’s Choice For Indoor Marijuana Cultivation

best led grow lightsBloomBeast A900 900W COB succeeded in securing first place on the list of Best 10 Full Spectrum COB LED Grow Light Reviews. Its one COB LED grow light that won’t leave you wondering if you should purchase a few 30w booster lights on the side.

Built using extremely reliable and durable material and a user-friendly design along with top-notch performance makes it a winner on the league.

Yeah, our selected existing users have reported that they’ve obtained around 20-25% better yield compared to the traditional LED Grow Light they’ve used to install inside their grow space earlier.

The most exciting part of the A series COB Grow Light by Bloombeast is the number of bands present in its spectrum.

Yeah, it features a 13 band of color along with UV and IR, which is ideal and well suited for the perfect and well-sustained growth of your marijuana plants.

This light has a supportive optical lens that helps in producing evenly distributable and dense light for green weed plants in you inside grow space.

Maximum PPFD value achieved by them from this LED grow light is 856 uMol at 24″, which is excellent regarding effectiveness in a specific area.

If you’re curious to know how it achieves that perfect spectrum and brightness, then Bloombeast has equipped this COB LED using 140 PCs of 5W LEDs and 3 large sized 100W COB chips to produce well-balanced light and illumination.

A great thing about this marvelous LED grow light is 3 mode switches. These mode switches are dimmable and you can adjust it between 0 and 100 according to the current phase of your plant’s life cycle.

Yeah, don’t be confused, 3 separate knobs help you in achieving the best quality light for seedling, vegging and blooming.

As far as coverage is concerned, you’ll get an ideal light for around 5’ X 4’ of grow space. Yeah, that’s huge.

As this light comes with separate mode switches, you won’t need to adjust its height back and forth. Yeah, gone are the time of hassle for adjustment of light according to your plants’ grow stage.

Now, comes the most vital part and that’s power efficiency. Majority of people thinks that it’s a 900W COB LED Grow Light and will suck a hefty amount of power from the wall but that’s not the case when you buy BloomBeast A900 900W grow light.

Yeah, it’ll help you in saving a decent 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.

Also, to keep things under control there are multiple cooling fans and a high-quality heat dissipation system.

Bloombeast is one of the best LED Grow Light manufacturers from China.  Customer satisfaction and support is their identity.

With BloomBest A900 900 Watt COB LED Grow Light you’ll get an industry leading 5 year warranty. However on a rare occasion, such situations will occur where you need to contact BloomBeast. But even if your grow light does need service, it’ll likely be covered in full.

Click here to see reviews and prices for the BloomBeast A900 900W on

Pros and Cons of BloomBeast A900 900W Full spectrum COB LED Grow Light

  • A complete 13 band full spectrum.
  • Must needed UV and IR for indoor plants.
  • Highly durable build
  • An elegant design
  • Mixture of traditional LED chips and COBs.
  • Great coverage area of 5’ X 4’
  • Higher PPFD values
  • Acceptable Power Consumption
  • 3 separate dimming nobs for convenience
  • 20-30% more yields compared to other lights
  • Fabulous cooling
  • 5 Years after sales support
  • Extremely intense light that can harm vision if seen with naked eyes.

As we said, the BloomBeast A900 COB LED has secured 1st place and became our editor’s choice for Review of Best COB LED Grow Lights on the marker.

From LED and COB Placement, Intensity, PPFD and warranty coverage it provides a great value to the indoor cultivators.

We highly recommend our readers to go for BloomBeast A900 COB LED grow light to obtain a well capable coverage of around 5’ X 4’ of grow space.

You won’t regret for your decision when you notice resinous and heavier flowers in your hand.

Click here to see reviews and prices for the BloomBeast A900 900W on

420 Expert Guide’s Verdict on Best COB LED Grow Lights on the market

We’ve included COBs feasible to various budget ranges, coverage capabilities, type of spectrum expectancy, and power efficiency.

But still in several cases it might seem to select the one which suits their needs in all the aspects.

And for that we’d like to give you a quick through regarding selection for the best for you.

Yeah, If you’re beginner and wants to try your hand directly on a COB grow light then there are three options available to you. Yeah, all of them are having some unique features and most essential abilities to offer your plants.

Above all, these COBs are offered at cheaper rates then competition. So, it’ll be a decent choice in case you’re running tight on budget.

Go for the below mentioned 3 products and select one out of them based on your coverage expectancy.

And, If you’re an intermediate cultivators and wants to upgrade to COB from traditional LED or HPS lighting fixture then below mentioned products are for you.

Yeah, all are from different brands and offers different level of coverage capability so choose one depending on your coverage expectancy.

However, from power consumption point of view all three are best in the segment and will definitely help you in saving your money on longer run.

For people with 3’ X 4’ to 4’ X 4’ coverage area can either go for BloomBeast 520w COB LED Grow Light or Canagrow CXB3590 COB LED Grow Light. As both of them have tremendous performance from yield perspective.

If you’re belonging in a lobby of people with 4’ X 4’ to 5’ X 4’ coverage and a complete spectrum admirer then Maxbloom 400W X4 Plus LED Grow Light and Bloombeast A900 900W COB LED Grow Light is there for you with several tremendous controlling abilities.


  1. MARUO, Toru, et al. “Effects of Supplemental Lighting with Light-Emitting Diodes (LEDs) on Tomato Yield and Quality of Single-Truss Tomato Plants Grown at High Planting Density.” Environmental Control in Biology, Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists, 11 June 2012,

MaxBloom, BloomBeast

  • Nick
  • Updated May 20, 2019