BEST 400W COB LED Grow Light Full Spectrum
What Makes COB LEDs Better?
The advantages of chip-on-board LEDs are:
Compactness: far more LEDs fit into a much smaller space, meaning more output from a smaller area
High-Intensity: since more LEDs are packed into a smaller space, the light is more intense, meaning deeper canopy penetration
Design simplicity: only use 1 circuit with 2 contacts to energize all the chips on the COB array, reducing the number of components needed
Lower failure rate: due to lower heat generation and better heat dissipation and fewer welding points (since each chip is mounted directly on the substrate, instead of soldered in place), quality COBs have a lower failure rate
The primary disadvantage is the fact that COB LEDs are not yet available in every color spectrum. Luckily, they are available in the colors best suited for growing plants (white and pink). The first 4 lights below use warm white and cool white COBs, while the final fixture uses pink ones.
ECO FARM 400 COB LED GROW LIGHT
Right off the bat: the Canagrow CREE CXB3590 400w COB LED grow light is by far the most expensive option on this list. The same goes for all the other sizes of this light. The high price is what drops them below the previous two lights in my rankings.
But there is a good reason for the price: the quality of the components.
Specifically, it is the top-bin CREE CXB3590 COB LEDs and the Meanwell drivers that drive up the price. Both are the industry standard and far above the Epistar and other chips that the rest of the lights on this list use.
Canagrow also uses the CXB3590 in its 100w light (using a single COB light) and in its 200w light (2 of them).
You may have also noticed 3 very similar lights to the Canagrow series by a company called CF Grow. Those lights are identical. They are even made in the same factory.
I picked the Canagrow lights, because they are usually a bit cheaper, but if you see a sale on the CF Grow lights making them cheaper, go ahead and buy those.
This review will focus on the 400 watt version, which gives you a PPFD of 1120 umol/m²/s in a 2×2 area (the only value given by the manufacturer) or 48,000 lumen (I’m not sure why they provide the lumens, but they do).
To achieve that intensity, it uses about 320 watts of power. It is roughly equivalent to a 600 watt HID light, although it does not give you as large a coverage area. This light covers about 3 by 3 feet for flowering.
These CREE COBs give you an all-white color spectrum with a color temperature of 3500K. This light includes all wavelengths, from 380 nm to 780 nm. It is a great spectrum for all stages of plant growth, with peaks in the red and blue ranges and lots of yellow and green light as well. Plants love this light spectrum.
That said, I prefer the Phlizon and Aglex COB LED grow light spectrum, because they supplement the 4 COB LEDs with additional red and blue diodes. Those are the colors plants need most, so adding additional light in those colors can really help boost growth and yields. The Canagrow lights also lack UV and IR wavelengths.
All of the Canagrow CXB3590 lights are rated for 50,000 hours of use and they come with a 3 year warranty and a 30 day satisfaction guarantee. If you don’t like them, you can return the lights for a full refund.
If you can afford them, these CREE LEDs are amazing lights. That said, I feel the huge difference in price is not quite justified by the difference in quality of the components. That, and the better color spectrum, is why I prefer the Phlizon and Aglex COB LED grow lights. On the other hand, this light has a dimmer, which none of the others do.
Pros
Great spectrum for plants (though not quite as good as the Phlizon and Aglex lights)
Top of the line CREE COB CXB3590 chips
Top of the line Meanwell driver
Dimmer so you can reduce power and save on electricity when you don’t need the full intensity
3 year warranty and 30 day money back guarantee
Cons
Very expensive compared to other LED grow lights on this list
No UV and IR
The advantages of chip-on-board LEDs are:
Compactness: far more LEDs fit into a much smaller space, meaning more output from a smaller area
High-Intensity: since more LEDs are packed into a smaller space, the light is more intense, meaning deeper canopy penetration
Design simplicity: only use 1 circuit with 2 contacts to energize all the chips on the COB array, reducing the number of components needed
Lower failure rate: due to lower heat generation and better heat dissipation and fewer welding points (since each chip is mounted directly on the substrate, instead of soldered in place), quality COBs have a lower failure rate
The primary disadvantage is the fact that COB LEDs are not yet available in every color spectrum. Luckily, they are available in the colors best suited for growing plants (white and pink). The first 4 lights below use warm white and cool white COBs, while the final fixture uses pink ones.
Using COB LEDs as Grow Lights
While there still are reasonable applications to using HID bulbs, the advantages of using COB LED grow lights outweigh the disadvantages.
But the question remails…
Does this technology justify the cost?
The introductory price of using COB LEDs in an indoor garden is initially higher, but they pay themselves off in the long term due to several advantages.
I’m going to take the liberty and compare COB LED’s to the most commonly used high quality lighting of today, namely: HPS, CMH, & MH lights.
To make things easier here’s a nifty little chart for you:
While there still are reasonable applications to using HID bulbs, the advantages of using COB LED grow lights outweigh the disadvantages.
But the question remails…
Does this technology justify the cost?
The introductory price of using COB LEDs in an indoor garden is initially higher, but they pay themselves off in the long term due to several advantages.
I’m going to take the liberty and compare COB LED’s to the most commonly used high quality lighting of today, namely: HPS, CMH, & MH lights.
To make things easier here’s a nifty little chart for you:
Light Type
|
µmol/j (ppf/w)
|
Lifespan
|
CCT (Kelvin)
| Color Rendering Index |
|---|---|---|---|---|
COB LED
|
1.8-2.5
|
30,000 – 60,000
|
2700-6500
|
70-97
|
Double-ended HPS
|
1.4-1.8
|
10,000 – 15,000
|
2100-3200
|
20-65
|
Ceramic Metal Halide
|
1.1-1.5
|
15,000 – 20,000
|
3100-4200
|
80-96
|
High Pressure Sodium
|
0.8-1.7
|
9,000 – 17,000
|
2100-3200
|
20-65
|
Metal Halide
|
0.6-1.2
|
8,000 – 15,000
|
3200-6000
|
80-92
|
T5 Fluorescent
|
0.6-1.1
|
8,000 – 10,000
|
3000-6500
|
85
|
ECO FARM 400W 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.ECO FARM 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. ECO FARM cob light covers area of about 3'x3' grow tent
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.
Features
Bridgelux & Epistar 100W COB chips
Light using convex optical lens
Optimize lighting coverage,
Avoid hot spots and get a full blend of light
ECO FARM 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
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.ECO FARM 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. ECO FARM cob light covers area of about 3'x3' grow tent
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.
Features
Bridgelux & Epistar 100W COB chips
Light using convex optical lens
Optimize lighting coverage,
Avoid hot spots and get a full blend of light
ECO FARM 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
ROLEADRO 400W COB LED GROW LIGHT
This 400W COB LED Grow light By Roleadro is known for its potential to generate intense light which is good for your plant’s overall health.
Roleadro 400W COB LED Grow Light comes in the form factor of 14.2” x 9.4” x 5.5” while it weighs around 6 pounds.
Its reflector cup design with focusing angle of 90 degrees helps to generate higher PAR value and lumen output compared to other normal LED Grow Lights.
And yeah, light generated by this COB LED grow light is very much stable and covers wider full spectrum with help of white light. This light is the result of many years of research by Roleadro and provides your plants with everything they need for better survival.
It provides an average coverage area of 3.5’ x 3.5’ at the height of 24”. And yeah, this light is suitable for the entire life cycle of your growing plants because it’s a well-balanced product for the seedling to blooming and harvesting.
Two Chips on Board LEDs are fixed in the center of grow light individually each of them generates light equivalent to the power of 200W.
Actual Average power draw of Roleadro LED Grow Light stays between 190W to 210W. The modular light design makes this grow light reliable in the long run.
This grow light comes with daisy chainable design so you shouldn’t worry if you’re planning to expand your grow space later on.
The latest scientific cooling system makes the whole experience of indoor growing a cool adventure.
Pros:
True Full Spectrum Light
State-Of-The-Art technology for LED Lights.
Scientific Design
Better Input-Output Ratio
Heat management for the cool environment inside grow tent
Longer lifespan
Best Class Service By Manufacturer
Daisy Chainable
Cons:
Not That much good coverage area.
Generates only white light. (Though it covers all the spectrum)
CANAGROW 400 Watt CREE CXB3590 COB LED Grow Light
This 400W COB LED Grow light By Roleadro is known for its potential to generate intense light which is good for your plant’s overall health.
Roleadro 400W COB LED Grow Light comes in the form factor of 14.2” x 9.4” x 5.5” while it weighs around 6 pounds.
Its reflector cup design with focusing angle of 90 degrees helps to generate higher PAR value and lumen output compared to other normal LED Grow Lights.
And yeah, light generated by this COB LED grow light is very much stable and covers wider full spectrum with help of white light. This light is the result of many years of research by Roleadro and provides your plants with everything they need for better survival.
It provides an average coverage area of 3.5’ x 3.5’ at the height of 24”. And yeah, this light is suitable for the entire life cycle of your growing plants because it’s a well-balanced product for the seedling to blooming and harvesting.
Two Chips on Board LEDs are fixed in the center of grow light individually each of them generates light equivalent to the power of 200W.
Actual Average power draw of Roleadro LED Grow Light stays between 190W to 210W. The modular light design makes this grow light reliable in the long run.
This grow light comes with daisy chainable design so you shouldn’t worry if you’re planning to expand your grow space later on.
The latest scientific cooling system makes the whole experience of indoor growing a cool adventure.
Pros:
True Full Spectrum Light
State-Of-The-Art technology for LED Lights.
Scientific Design
Better Input-Output Ratio
Heat management for the cool environment inside grow tent
Longer lifespan
Best Class Service By Manufacturer
Daisy Chainable
Cons:
Not That much good coverage area.
Generates only white light. (Though it covers all the spectrum)
Right off the bat: the Canagrow CREE CXB3590 400w COB LED grow light is by far the most expensive option on this list. The same goes for all the other sizes of this light. The high price is what drops them below the previous two lights in my rankings.
But there is a good reason for the price: the quality of the components.
Specifically, it is the top-bin CREE CXB3590 COB LEDs and the Meanwell drivers that drive up the price. Both are the industry standard and far above the Epistar and other chips that the rest of the lights on this list use.
Canagrow also uses the CXB3590 in its 100w light (using a single COB light) and in its 200w light (2 of them).
You may have also noticed 3 very similar lights to the Canagrow series by a company called CF Grow. Those lights are identical. They are even made in the same factory.
I picked the Canagrow lights, because they are usually a bit cheaper, but if you see a sale on the CF Grow lights making them cheaper, go ahead and buy those.
This review will focus on the 400 watt version, which gives you a PPFD of 1120 umol/m²/s in a 2×2 area (the only value given by the manufacturer) or 48,000 lumen (I’m not sure why they provide the lumens, but they do).
To achieve that intensity, it uses about 320 watts of power. It is roughly equivalent to a 600 watt HID light, although it does not give you as large a coverage area. This light covers about 3 by 3 feet for flowering.
These CREE COBs give you an all-white color spectrum with a color temperature of 3500K. This light includes all wavelengths, from 380 nm to 780 nm. It is a great spectrum for all stages of plant growth, with peaks in the red and blue ranges and lots of yellow and green light as well. Plants love this light spectrum.
That said, I prefer the Phlizon and Aglex COB LED grow light spectrum, because they supplement the 4 COB LEDs with additional red and blue diodes. Those are the colors plants need most, so adding additional light in those colors can really help boost growth and yields. The Canagrow lights also lack UV and IR wavelengths.
All of the Canagrow CXB3590 lights are rated for 50,000 hours of use and they come with a 3 year warranty and a 30 day satisfaction guarantee. If you don’t like them, you can return the lights for a full refund.
If you can afford them, these CREE LEDs are amazing lights. That said, I feel the huge difference in price is not quite justified by the difference in quality of the components. That, and the better color spectrum, is why I prefer the Phlizon and Aglex COB LED grow lights. On the other hand, this light has a dimmer, which none of the others do.
Pros
Great spectrum for plants (though not quite as good as the Phlizon and Aglex lights)
Top of the line CREE COB CXB3590 chips
Top of the line Meanwell driver
Dimmer so you can reduce power and save on electricity when you don’t need the full intensity
3 year warranty and 30 day money back guarantee
Cons
Very expensive compared to other LED grow lights on this list
No UV and IR
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