Best 300W LED Grow Light in 2021

Are you new to indoor growing and wondering which LED grow light type to buy?

The most convenient choice for a beginner would be a 300-watt LED grow light. This type is just perfect for a small grow tent or room. It can successfully help a few plants grow from seeds to bountiful yields.

Choosing the best 300W LED grow light, however, may not be easy because there are many models to choose from. You have to do a little research to find a model that best suits your indoor growing needs.

We researched on your behalf and found eight products for beginner indoor growers or small growing areas.

Top Pick

LECLSTAR 300W LED Grow Light is our top pick and bestseller. You get four units and a heavy-duty stand out of the box. This is a great model for indoor potted plants or indoor growing in a small space. The unit comes with advanced features, including remote control.

The Best 300W LED Grow Lights Are:

LECLSTAR 300W LED Grow Light

This incredible model from LECLSTAR draws 300 watts and puts out more light than conventional 300W models.

Key Features

  • AC/DC power source
  • A Tripod stand is included
  • 3 light modes
  • 10 dimming levels
  • Wireless RF remote control

LECLSTAR 300W LED Grow Light uniquely designed lamp is made up of four hundred and twenty high brightness LED beads. But it only forty watts of power to effectively transmit three hundred watts.

This specific model can improve the growth rate of your indoor plants by approximately fifty percent compared to conventional grow lights. The light comes with a premium quality aluminum shell that is exceptional at heat radiation. It helps improve the lamp’s life up to fifty thousand hours.

This model comes with automatic on/off and dual control features. You’ve got three light modes, including white, red and blue, and mix lightly. It comes with multiple dimming levels at 100, 80, 50, 25, and 10 percent. The package comes with four lights, which you can operate independently. This allows you to turn one, two, three, or four of the lights on at any given time.

This model comes with a wireless RF remote control, which is great because it allows you to operate the lights automatically. You’ve got a power-on, power-off, +/-brightness, spectrum, independent control, 4H, 8H, 12H, and timer off button. The timing switch buttons allow you to set the lights at four hours, eight hours, or twelve hours.

You will appreciate the fact that this model comes with an easily adjustable tripod stand. You can adjust the height to 35 inches, 47 inches, or 60 inches, depending on your plant’s light requirements. The light tubes can also be adjusted to a specific angle.

Pros

  • It is high efficient and energy saving
  • The remote control allows for easy operation
  • The stand is height adjustable and the tubes are angle adjustable
  • Three light modes for added versatility
  • Can set the timer (4H, 8H, or 12H) for automatic on/off

Cons

  • The light is a little bit costly compared to similar products

Verdict

This 300W grow light kit is the real deal. The lights have a great spectrum for enhancing photosynthesis, promoting plant germination, promoting seedling growth, and supporting flowering and fruiting.

Overall Rating: 5.0

iPower Full-Spectrum 300-Watt LED Grow Light

When compared to HID and fluorescent lamps, this incredible model from iPower is highly energy-saving and delivers effective ppfd values.

Key Features

  • 3-watt LED chipset
  • 100 LEDs in the lamp
  • 50/60 Hz operating frequency
  • Two cooling fans
  • On/Off switch

iPower Full-Spectrum 300-Watt LED Grow Light rivals the output of a one-thousand-watt of high-pressure sodium lamps. This unique model consumes up to eighty percent less power while giving your plants the ideal blend of light for all phases of plant growth.

We truly appreciate the high-performing heat dissipation system that is made up of two high-quality internal fans. The cooling system reduces heat by about thirty-five percent to ensure the unit is cool-running. You’ve got a convenient on/off switch that is super easy to operate. The backside of the lamp is fitted with four mounting holes for easy installation when using an adjustable rope hanger.

The lamp is fitted with 3-watt LED chipsets, which is good because they are energy-saving, produce high brightness and intensity, allow for directional lighting, and offer instantaneous illumination.

This light will not cost you anything as far as maintenance is concerned because you don’t need expensive replacement bulbs. This lamp is a great choice for indoor growing, including soil growing, aeroponics, and hydroponics.

What we don’t like about this model is the fact that it has only one control setting. So, you will need a timer to control the lighting hours.

Pros

  • It is highly energy-saving compared to conventional lamps
  • It is safe to operate without the risk of exploding bulbs
  • No expensive replacement bulbs are necessary
  • Has a low thermal footprint
  • The premium quality internal fans improve heat dissipation

Cons

  • It only features one control setting

Verdict

This is a great choice for indoor soil growing, aeroponics, and hydroponics. It has also been safety-tested, so you don’t have to worry about exploding bulbs.

Overall Rating: 4.6

Kolem 300-Watt LED Grow Light

This is a game-changer 300-watt LED grow light. It is a unique desk grow lamp that delivers superior lighting for indoor growers.

Key Features

  • Sunlike full-spectrum
  • 90 to 120-degree view angle
  • 40-watt draw power
  • Up to 850 µMol PAR
  • Replaceable bulb design

Kolem 300-Watt LED Grow Light comes in a good package that prevents any damage to the light and its mounting accessories.

Out of the box, you get a heavy-duty stand, two three-hundred-watt lamps, and an instructions manual. The dual-tube stand is integrated with a mounting bracket and a six-foot power cord. The lights fit easily into the tubes.

Each light is made of Cree LED chips and a cellular lens to produce a powerful full-spectrum light to entice your plants to grow healthier and bigger. The cellular lens is very effective at increasing the plants’ ppfd to about eight hundred and fifty micromoles per square meter at eighteen inches above the plants’ canopy.

This model has successfully won approvals from PSE, ROHS, CE, and FCC. So, this means the lights have superior overvoltage, overheating, and overcurrent protection. The six-foot power cable is certified by UL, CE, and CCC.

The lights have four settings, which can be operated together or independently. You can direct the lamps to any section of the growing space, depending on the location and height of the plant.

But the thing is, the lights are a little bit heavy and they may topple over the stand if not properly mounted.

Pros

  • Heat dissipation casing improves cooling performance
  • The three-hundred-and-sixty-degree necks rotate for added versatility
  • The high-quality chips produce high ppfd values
  • The bulbs are replaceable and easy to find on the market
  • Has superior energy-saving and long lifespan

Cons

  • The lights are a little bit heavy for the desk stand
  • The six-foot power cord is a little bit short

Verdict

You’ve never used a desk LED grow light like this one. It is uniquely designed to deliver the best results for indoor growing.

Overall Rating: 4.5

Vivosun Full-Spectrum 300-Watt LED Grow Light

This is a great grow light source for indoor growing. It comes highly recommended for a growing space of 3 by 2 or 3 by 3.

Key Features

  • Consumes about 135 watts on average
  • High-performing cooling fan
  • Targeted spectral bands for growth
  • High-intensity five-watt LEDs
  • A lifespan of up to one hundred thousand

Vivosun Full-Spectrum 300-Watt LED Grow Light delivers a superior spectrum coverage, which is great because you get more power for blooming.

You also get maximum ppfd at different grow light distances from the plants’ canopy. The lamp’s full spectrum promotes explosive vegetative growth along with a healthy flowering cycle compared to the competition.

The light is recommended for 3 by 3 and 3 by 2 growing rooms and tents. With only eight white LEDs out of sixty, the lamp delivers targeted spectral bands for superior and effective growth. You’ve got two infrared LEDs for boosting flowering. The IR LEDs are usually dim, which is okay because that is how they are supposed to be.

The light’s composite, sleek metal design is fortified, which is good because it can withstand rough handling. All the electrical parts in the lamp are securely attached and safety-tested. The lamp is properly packaged with enough cushioning for preventing damage during shipping.

But here is the thing, it is possible to receive a model with flickering LEDs.

Pros

  • It delivers optimum spectrum coverage
  • Provides effective PAR value at different distances
  • It is a great choice for grow tents and small grow rooms
  • It is innovatively designed to dissipate heat
  • It is backed with a three-year warranty and a thirty-day return guarantee

Cons

  • It is possible to receive a lamp with flickering LEDs

Verdict

Consuming only one hundred and thirty-five watts, this amazing 300-Watt grow light from Vivosun is a great substitute for a 250-watt MH or HPS lighting system.

Overall Rating: 4.5

Growstar 300-Watt UFO LED Grow Light

Have you been looking for a high-PAR value grow light for your indoor grow-room or tent? Look no further than this amazing 300-watt model from Growstar.

Key Features

  • Advanced full-spectrum
  • Zener diode technology
  • LED chips 30W one-piece cree
  • Powerful cooling fan
  • 90 to 120-degree angle

Growstar 300-Watt UFO LED Grow Light is made up of fifty-four pieces of five-watt bridgelux LEDs and one piece of thirty-watt cree cob.

The red light produced by the LEDs does a great job of promoting photosynthesis, growth, as well as blossom. The blue light will help your plants in phototropism. UV light LEDs help sterilize and disinfect plant disease as well as prevent extreme growth. IR light; on the other hand, helps with the development of heat and crop growth.

You’ve got a powerful cooling fan system along with an aircraft-grade heat-conducting aluminum case and a built-in aluminum heatsink. This unique construction is very effective at emitting any excess heat from the LEDs. This helps cool the LEDs as well as improve the service life of the lamp. The aluminum shell may feel a little bit hot when the light is operating.

But here is the thing, this light is not waterproof, it is designed for indoor use only, the IR and UV chips appear very dim.

Pros

  • It promotes photosynthesis, sprout, and blossom
  • Helps sterilize and disinfect plant disease
  • The powerful cooling system ensures the unit is cool-running
  • The Cree COB light increases brightness
  • It comes in a premium quality package to prevent scratching

Cons

  • The design of the light is not waterproof

Verdict

This premium quality 300-watt LED grow light with an integrated Cree cob produces superior illumination and effective PAR values.

Overall Rating: 4.4

Bozily 300-Watt Seedling LED Grow Light

Have you been looking for a high-performing 300-watt LED grow light for your seedlings? Look no further than Bozily 300-Watt Seedling LED Grow Light.

Key Features

  • Foldable full-spectrum design
  • 360-degree no dead angle
  • No fan no noise
  • Customizable grow light
  • Energy-saving design

This uniquely designed light adopts a cutting-edge aluminum heatsink cooling system, which is great because it allows for superior heat dissipation. The lamp’s size, as well as illumination area, are three times that of conventional LED lights. You’ve got a ninety-degree reflector cup that does a great job of maximizing the illumination area.

At forty-inch high, the light produces a PAR value of 335 that is suitable for the seedling phase. At twenty-four-inch high, it delivers a PAR of 430 that’s ideal for the growing phase. At eighteen-inch high, the lamp produces a PAR value of 998 that is perfect for flowering. At twelve-inch high, the light delivers a PAR value of 1802 that is suitable for fruiting.

With a rated lighting power of three hundred watts, the light has an effective power consumption of sixty-five watts. Its working temperature ranges from negative four degrees Fahrenheit to one hundred and twenty-two degrees Fahrenheit.

But here is the thing, some models may have quality control issues.

Pros

  • The LED grow light is highly customizable
  • Delivers a full spectrum that is ideal for all growth stages
  • Produces effective PAR values at different grow light distances
  • The integrated reflector cup maximizes the illumination area
  • Meets minimum safety standards for indoor use

Cons

  • It does not come with a fan for superior cooling performance
  • The cord is pretty short, you may have to use an extension cable

Verdict

This is a great lamp for the money. It is a suitable choice for a 4 by 4 or 4 by 6 growing space. Not to mention that it is super easy to set up.

Overall Rating: 4.4

Olafus 2-Pack 300-Watt LED Grow Light

Do you want your plants to thrive indoors and grow into healthy flora? Then look no further than this amazing 300-watt LED lamp from Olafus.

Key Features

  • Sunlight full-spectrum
  • All growth stages
  • Waterproof design
  • Fin-type heatsink
  • 120-degree beam angle

Olafus 2-Pack 300-Watt LED Grow Light comes equipped with seventy-two LEDs. The red LEDs promote superior germination, photosynthesis, and flowering. The blue LEDs make sure your plants get more energy. The green and yellow LEDs work together to promote root growth and germination. The infrared LEDs, on the other hand, promote blooming as well as flowering.

The individual lights feature a die-cast aluminum design with uniquely made fins, which is good because it promotes superior heat dissipation. The innovative design can be mounted on a wall or hanged by a bracket or metal rope.

The lights have an effective consumption wattage of sixty watts with an average lifespan of fifty thousand hours. You’ve got a superior beam angle of one hundred and twenty degrees for superior coverage.

For the germination phase, the lights should be hanged at forty-five to thirty-five centimeters. During the seedling phase, hang the lights at about thirty-five centimeters. For the vegetative stage, hang the light at thirty-five to twenty-five centimeters. During the flowering and fruiting stages, hang the lights at about ten centimeters from the canopy.

But here is the thing, some models may end up full of condensation after extended use.

Pros

  • Multiple ways for installing the lights
  • The cooling system is very effective at dissipating heat
  • Delivers a full spectrum for all growth stages
  • Have a superior beam angle for superior coverage
  • Contribute to superior germination, seedling, and flowering

Cons

  • Some model may form condensation under the lens

Verdict

This is a nice model for the money. The lights do a great job of promoting germination, seedling, flowering, as well as fruiting.

Overall Rating: 4.4

MSMKEJI 300-Watt LED Grow Light

This premium quality 300-watt grow light from MSMKEJI offers a full spectrum range, including blue light, red light, infrared, and UV for healthier plants and better blooming.

Key Features

  • Ninety LED pcs
  • Full-spectrum
  • HID replacement lamp
  • 40-watt actual power
  • Dual Epiled/Bridge lux chips

MSMKEJI 300-Watt LED Grow Light is made up of ninety-eight LEDs, including two UV, five infrared, fourteen 3000 to 6000K, sixty-one red, and sixteen blue LEDs.

The blue LEDs are ideal for vegetative growth and also promote leaf and stem weight gain. The red LEDs are very effective at encouraging budding, flowering, as well as fruiting. The IR LEDs (which are usually dim) improve growth.

This model has an inbuilt IC for memory timing. All you have to do is set the working time that ranges from one to twenty hours. The lamp will automatically go off when the time is up. You’ve got a high-performing remote control that you can use to adjust the brightness, timing, as well as mode. You’ve got three modes of operation that will cater to all the growth stages.

What we don’t like about this model is the fact that it doesn’t come with all the mounting gear as indicated in the picture.

Pros

  • Delivers a full spectrum that is ideal for all growth stages
  • Comes with an automatic timer and remote control
  • Three modes of operation improve versatility
  • The innovative design allows you to connect more than one lamp
  • The ergonomic control buttons are easy to use

Cons

  • Some models may not come with mounting gear

Verdict

This high-performing lamp delivers superior and effective PAR values. It will increase your indoor harvest.

Overall Rating: 4.4

Things to Consider When Buying 300W LED Grow Light

Here are the most important things to take into consideration:

Coverage and Penetration

A 300-watt LED grow light is the perfect size for a 1.5X1.5 and 2X2 grow space. But you need to choose a model with excellent PAR output for superior coverage and penetration. This means you have to choose a grow light with high-performance LEDs.

Double Switch Design

Choose a grow light with two switches, one for the Veg mode and the other one for the Bloom mode. This will allow you to control the lighting in different growth stages.

Innovative Heat Dissipation

You don’t want a light that will produce excess heat and burn your plants or stop working altogether. So, make sure the light fixture comes with powerful fans for superior heat dissipation and multiple heat sinks for ventilation.

Final Thoughts

For this roundup, the winner is LECLSTAR 300W LED Grow Light. This great model delivers super bright light with the option of lowering the intensity. It has three illumination modes and ten adjustable brightness settings. But the most important feature is the remote control. You will also have no issues assembling the unit.

Recent Posts