in Arts & Entertainment

Best 600 Watts LED Grow Light: Full Spectrum (Review 2020)

Share to friends!

If you are looking to start growing cannabis, you may be in a haze trying to figure out which is the most practical light to use on your plants. A single mistake in your decision can have devastating results on your cannabis. However, with the various grow lights in the market, how do you make the right selection?

Making the right selection involves having enough information about the different options available in the market and how the different lights they produce can be beneficial to your plants. When looking for Grow Light that is specifically for growing cannabis, you need to get a full spectrum LED grow light

The type of light you use has a monumental effect on your cannabis growing efforts. Many factors go into what LED light to use for growing cannabis. We did the research for you and have rounded up the most important ones below.

Light spectrum

  • While plants can grow under most spectrums, to make the process efficient they need specific wavelengths throughout each growth stage. High quality LED lights provide the full spectrum of light, allowing you to select the best one for each growing stage. Plants naturally react and grow based on the spectrum of light they get outdoors. They will grow as long as they receive blue and red lights, though most good LED lights offer the full spectrum. The spectrum you use in different stages will affect the plant’s growing patterns.
  • Blue lights (400nm — 500nm): Blue lights are often used in the vegetative stage of growth. That’s because this spectrum mimics the sunlight during summertime. Plants use this blue spectrum as a hint to spread its leaves in order to soak up as much sun as possible during the summer. It’s recommended to use blue light during the plant’s vegetative stage so it spreads and grows leafy. However, if you use blue light throughout growing you’ll get plants with short stems but with large healthy leaves.
  • Red lights (660nm — 730nm): Red or yellow lights are often used in the flowering stage of growth. This spectrum mimics the sunlight during the fall. This is when plants grow tall to prepare for the upcoming winter. Taller plants are in a better position to bud and pollinate via winter winds. Using more red light stimulates your cannabis to grow taller and flower (promoting bud growth).
  • Since you’re playing the role of the sun, you can choose the optimal spectrum of light for the strain of weed you’re growing. Most LED grow lights come with customized spectrums of light that are optimized for speedy growth. Manufacturers often state the great PAR of their LED grow lights. Photosynthetically active radiation, or PAR, is the wavelengths of light between 400nm and 700nm. These wavelengths are the best for photosynthesis.

Amount of light

The more light your plants receive, the better they grow. So, how do you find an LED grow light that emits the highest quantity of light? For one, LED lights are already designed to directly aim at the plant. Panels that are 3W per bulb produce the highest yield without burning the plant. More panels help spread light over more area. It’s recommended to use an LED grow light with over 2 panels if you plan on having a large growing space.

Wattage per square foot and coverage area

Your grow lights will be running for long hours, so you’ll want to save electricity.You’ll want to check the electrical output of your light, which should optimally stay over 300W. If the wattage is too high, you can run the risk of burning your plants. The recommended amount for growing cannabis is 50–60 watts per square foot. You will also want to know how much area your lights can cover. Most lights we recommended today have a coverage area of 3 ft x 3 ft at the vegetative stage.

Low heat emission

It’s important to find an LED grow light with low heat emission. You don’t want to run the risk of burning or discoloring your plants. You can put lights with low emission close to your plants, allowing them to receive more direct light. Controlling the temperature of your grow room is important for saving electricity and room temperatures contribute heavily to plant growth. If the air is humid, similar to the tropics, your plants grow optimally. Grow lights that emit too much heat turn the air dry, meaning your plants won’t grow.

Quality of materials

LED lights can be an expensive investment and the quality of your light source highly affects the yield. You want an LED light that gives off 3W per bulb, meaning the semiconductor chip needs to be of high quality. You need to look for durability; very durable LED grow lights last for 50,000 hours plus. Look for manufacturers that state longer warranties (2 years plus). They are most likely using the highest quality materials. Most grow lights we suggested today come with a hanging hook and power cord.

Best Recommends

ECO Farm Samsung LM301B 600W Quantum Board with Daisy Chain

ECO Farm LED Grow Lights utilize the latest in high yielding LEDs technology today-Samsung LM301B diodes, high Energy Efficiency with 2.7 umol/J, delivers powerful light output and uniform canopy penetration to resulting maximum higher yields. Running 50% less power than the HPS or other SMD LEDs or Blurple lamps.

Upgraded series growing lights have a dimming knob and light switch. A single light can be adjusted the light intensity at liberty. Multi-light Connection with unified dimming especially beneficial for large area of indoor growing and commercial planting.

Excellent full spectrum – white, blue, red and IR (3000K, 660nm and IR 760nm and UV 395nm). 3000K diodes providing more reddish light. The 660nm red and IR light is especially useful during bloom, where it speeds up flowering time and boost yields. Turn your seeds into your own supply. And the light looks fairly natural, so it’s good for accurately monitoring plant health.

No Fan Noise Free. High Safety performance MEAN WELL Driver, Fair Waterproofing. Update aluminum board is thick and sturdy, doesn’t put out a tremendous amount of heat, high-quality protective covers for cables; User-Friendly Packaging. Quality components mean the light lasts longer, but they also save you money.

Save 25% on at checkout. Code: ECOFarm25

optic slim 600h

The New Optic LED Slim 600H Vertical Farming LED Grow Light takes Vertical Farming into the new era. Slim 600H is the vertical farming LED Grow Light that is engineered to be superior and outperform all of the Vertical Farming LEDs on the market today. Fully equipped with the Latest in High End LED technology from the best of Samsung, the best of CREE & best from Meanwell. Slim 600H is a massive 41″ x 42″ fixture which delivers uniform light intensity and promotes uniform growth across your canopy. Dimming gives you full control of your intensity and allows you to only use what you need taking efficiency to the next level, reducing btu output and extending the lifespan of the fixture. 

The Key to unleashing the full potential of Samsung’s Vertical Farming LEDs is the number of LEDs used per watt of Electricity. Most companies are using 2.5 LEDs per watt or less which only unlocks a portion of the full potential. The Slim 600H is using over 4.5 LEDs per watt which increases cost substantially but also delivers industry-best efficacy for LED Grow Lights with Samsung LEDs at 3.0 umols/j. Double Row LED strips with 2,760 LEDs all being under driven to max efficiency to deliver next generation Par efficacy and a mind-blowing 1200+ PPFD at 10″ & 12″.  The Slim 600H integrates USA Made CREE XPE Red and Blue LEDs which are proven to be the most efficient bloom enhancers on the mainstream market today giving you a balanced Spectrum that can be easily absorbed at higher intensities and allow you to get the light as close as 10″ from the Canopy. 

Slim 600H is for growers who want to grow with the latest and greatest LED Tech from Samsung and their new Horticulture specific line of LEDs. Slim 600h is the first Vertical Farming style of light to integrate Blue LEDs with the Red LEDs to make the light easier to absorb at high intensities and promote best possible bud quality. Slim 600H is also the first to feature Samsung’s LM301H LEDs in a high power LED grow Light that flowers a 4×4 area or bigger. Slim 600H is also the first to deliver over 4.5 LEDs per watt with Samsung LED Tech and the first to be engineered with a ppf/w rating of 3.0 umols/j. Imagine what a Slim600H can do for your garden!


Every Grow light in the market is different and unique in its way. They all offer exceptional performance. However, you have to select the best light that suits your growth needs by considering the budget in play and the area of growth. Regardless of whether you are a new cannabis grower or not, the above listed best 600W LED grow light appliances will sure be beneficial to you.

Share to friends!