COB LED GROW LIGHTS
In 2016, there was a report conducted detailing the global LED industry demand and supply. The two most popular COB LED manufacturers on the market today are Cree, and Citizen as demonstrated by their share of the total revenue. After these, Sharp and Bridgelux were joint third.Cree’s most popular models are the CXB3070 and the CXB3590 with the CXB3590 cob led grow light being the best lighting option. The CXB3070 is slightly cheaper but not as effective at growing your plants.
During our research, the most active members of the COB LED communities tended not to speak highly of Cree chips. It’s not so much that they don’t work, but you can buy other chips for cheaper which work at least as well, if not better.
Depending on the size of your grow room or grow tent, reflectors can be used to focus the light in the direction you’d like. COB LEDs have a shining angle of approximately 120° but the reflectors narrow this to around 90° which can make a big difference in larger growing areas.
Advantages Of COB LED Chips
These are the biggest advantages of COB LEDs for growing:
Higher light density: many small diodes in a tight space makes for a much higher light density, meaning you need less space to produce more light
Deeper canopy penetration: since COBs function as one large LED chip (up to 120w) they are much more powerful than a single diode and penetrate far beneath the canopy
Great spectrum for plants: COBs are available in a number of colors, but the most common for growing are warm white and cool white; many fixtures combine the two for a great plant light spectrum
Great spectrum for humans: the white light means your plants look basically the same as they would under sunlight; no more pinkish or purplish glow that hides issues until its too late
Better light spread: since COBs are usually placed fairly far apart on large fixtures, they cover the plants below more evenly than a smaller light fixture that has to spread out from a central point
Efficiency: COBs give you more power per input watt and also product less heat
QUANTUM BOARDS
quantum board samsung 301b LEDs are even newer than COB LEDs and were designed by the Horticulture Lighting Group who gave them their slick name.
The diodes are placed in parallel lines and work with high-powered constant current drivers. There are two types on the market called the QB304 and the QB288, the number references the amount of diodes in the quantum board.
The diodes are made by Samsung, the models are LM561C. These are really efficient with efficacy at around 200 lumens/watt. Forward voltage is ~2.7-2.8V and 65mA.
Are best quantum boards better than COB LEDs? Well, they’re essentially the next stage in COB development. They work on the same principle but are in contact over a larger area, making them one really big COB.

With quantum boards canada you won’t have to worry about overheating as much, they don’t need active cooling on their heat sinks. Their light production is distributed more evenly over the area of around 1′. Thus, fewer hotspots but maximum illumination. Your plants will grow happier. COBs typically have an efficacy of approximately 150 lumens/watt, whereas quantum boards are reaching about 180 lumens/watt.
If you want to build eco farm quantum board yourself, know it’s trickier and the cost is still relatively expensive. You could purchase several decent COBs for the same price which may well be a valuable consideration.

They’re still in their infancy but quantum boards look like a promising next step in lighting technology.