6 Best 300W LED Grow Lights for Plants

Growing plants in a confined space requires proper lighting. For this, you can opt for 300W LED grow lights offering efficiency and a good amount of brightness. Let’s take a look at some of the best 300W LED grow lights out there and what to expect from each of them.

best 300w led grow light

Best 300W LED Grow Lights

PlatinumLED Advanced Platinum P300
PlatinumLED Advanced Platinum P300
9.3
  • Material: Aluminum
  • Settings: Veg and Bloom
  • Coverage: 4.5’ x 3.8’ at 18”
  • Additional Features: Heat sinks, quiet fans
  • Warranty: 5 years
     
Viparspectra V300
Viparspectra V300
9.6
  • Material: Iron
  • Settings: Multiple
  • Coverage: 2’ x 2’ at 24”, 1.5’ x 1.5’ at 18”
  • Additional Features: Daisy chain
  • Warranty: 3 years
MarsHydro 300W
MarsHydro 300W
9.4
  • Material: Alloy steel
  • Settings: Multiple
  • Coverage: 2’ x 2’, 3.5’ x 3.5’
  • Additional Features: Daisy chain
  • Warranty: 3 years
     
Relassy LED
Relassy LED
9.5
  • Material: Aluminum
  • Settings: Multiple
  • Coverage: 3’ x 3’ at 18”
  • Additional Features: Reflector, heat back panel
  • Warranty: 2 years
Meizhi 300
Meizhi 300
9.1
  • Material: Aluminum, plastic
  • Settings: Veg and Flower
  • Coverage: 3’ x 2’
  • Additional Features: Daisy chain
  • Warranty: 3 years
     
Vivosun 300W
Vivosun 300W
9.4
  • Material: Aluminum
  • Settings: Multiple, dual switch
  • Coverage: 2’ x 2’ at 24”, 1.5’ x 1.5’ at 18”
  • Additional Features: Daisy chain
  • Warranty: 3 years

Through this section, we will take you through some of our top picks of 300W LED grow lights. We will cover their main features as well as their pros and cons so that you can get a better idea about them, allowing you to make a fair and informed decision. Let’s get started!

1. PlatinumLED Advanced Platinum P300
1. PlatinumLED Advanced Platinum P300
1. PlatinumLED Advanced Platinum P300
Our Score

The Advanced Platinum P300 is a 12-band grow light that you can effectively use for growing your plants. The 12 bands present in this grow light can offer a wide spectrum to your plants depending on their requirements.

This grow light also comes with two switches for Veg and Bloom that you can accordingly turn on based on what you are growing and how much light your plants require. You can also make use of the 90-degree lenses that can focus and pierce through various depths.

This light further comes with an aluminum structure, efficient and quiet fans for cooling and a long lifespan of 100,000 hours. These LED lights are also quite energy-efficient despite being highly dynamic and bright, ensuring that they do not add too much to your monthly bills.

Features:

Material:Aluminum
Settings:Veg and Bloom
Coverage:4.5’ x 3.8’ at 18”
Additional Features:Heat sinks, quiet fans
Warranty:5 years
Pros
  • There are 12 bands that you can make use of to offer a full lighting spectrum to your plants no matter what stage of growth they are in.
  • It comes with both cooling heat sinks as well as fans that can prevent the structure from overheating. These are also quiet and efficient while functioning.
  • There are dual settings for you to pick from that include Veg and Bloom, offering versatility.
  • It is energy efficient since it only draws in a maximum power of 180W while still being durable and strong for up to 100,000 hours.
  • It comes with a five-year warranty period in case you need to seek any repairs or replacements.
Cons
  • It is slightly expensive as compared to other LED grow lights.

Get the PlatinumLED Advanced Platinum P300:

2. VIPARSPECTRA V300
2. VIPARSPECTRA V300
2. VIPARSPECTRA V300
Our Score

The VIPARSPECTRA V300 is a full spectrum grow light that comes in over 12 wavelengths that you can use to grow your plants, no matter which stage they are in.

It also comes with infrared (IR) lights in a good balance with the other red and blue lights that can aid the flowering process while also improving the overall yield.

It is quite efficient as well since it only consumes a maximum power of around 130W, ensuring that it does not add significantly to your power bills.

It comes with fire-resistant reflectors, cooling heat sinks as well as quiet fans that can ensure that this structure remains durable, powerful and effective. It has an approximate lifespan of 100,000 hours.

It also includes a daisy chain feature that can allow you to connect multiple lights together.

Features:

Material:Iron
Settings:Multiple
Coverage:2’ x 2’ at 24”, 1.5’ x 1.5’ at 18”
Additional Features:Daisy chain
Warranty:3 years
Pros
  • It can offer full spectrum lighting solutions with over 12 wavelengths to suit your plants at all growing stages throughout their lifespans.
  • It includes fire-resistant reflectors, cooling heat sinks and fans that can prevent the structure from overheating. These are also quiet and efficient.
  • It is durable and has a lifespan of 100,000 hours.
  • It comes with a daisy chain function that can allow you to connect multiple lights to it, providing a wider coverage across multiple plants.
  • It comes with a three-year warranty period that you can make convenient use of in case you need to access any repairs or replacements due to some issue.
Cons
  • The coverage level of this individual unit is not as much as the other grow lights.

Get the VIPARSPECTRA V300:

3. MarsHydro 300W
3. MarsHydro 300W
3. MarsHydro 300W
Our Score

The MarsHydro 300W grow light is another full-spectrum lighting solution that has an alloy steel build, making it sturdy and durable. It can provide uniform lighting to the plants while also offering multiple settings that you can pick from depending on the stage of growth that your plant is in.

It comes with several Epistar LED lights that can provide a strong light to the plants. It also distributes this light equally throughout its functioning without overheating due to the presence of a cooling hole and a bass cooling fan.

It has a single switch with which you can change the settings, making it convenient to use. It also has a daisy chain feature so that you can attach the unit to other lights for good coverage.

Features:

Material:Alloy steel
Settings:Multiple
Coverage:2’ x 2’, 3.5’ x 3.5’
Additional Features:Daisy chain
Warranty:3 years
Pros
  • It offers full-spectrum lighting that you can use on hydroponic as well as soil-based plants that are in different stages of their growing cycles.
  • It comes with a daisy chain function that you can use to connect multiple lights or units together with this one so that you can get greater coverage.
  • It comes with a cooling hole along with a bass cooling fan that can prevent the structure from overheating, ensuring efficiency, power and durability.
  • It offers pretty wide coverage, with the maximum coverage going up to 3.5’ x 3.5’. This can ensure better lighting conditions for the plants.
  • It comes with a three-year warranty period, allowing you to make the necessary repairs or replacements if they come up during this period.
Cons
  • It does not include either infrared or ultraviolet lights.

Get the MarsHydro 300W:

4. Relassy LED
4. Relassy LED
4. Relassy LED
Our Score

The Relassy LED grow light offers full-spectrum lighting and comes equipped with 338 LED bulbs on its structure. Instead of offering red and blue lighting, this unit offers yellow sun-like lighting options that can meet the needs of various plants in all stages of their growth.

You can adjust the settings and timings of this light based on which the light will automatically turn on or off once it reaches the time limit. It also includes heat back panels and a cooling heat sink that can allow this unit to keep functioning well without overheating.

This LED grow light consumes a maximum power of only 110W, allowing you to save plenty of money on your energy bills. Being slender and collapsible, this unit is convenient to use and does not take up too much space.

Features:

Material:Aluminum
Settings:Multiple
Coverage:3’ x 3’ at 18”
Additional Features:Reflector, heat back panel
Warranty:2 years
Pros
  • This comes with 338 yellow LED lights that can offer full coverage along with uniform lighting for plants no matter which growth stage they are in.
  • It comes with a heat back panel and a cooling heat sink that can keep the unit from overheating. Without fans, this can ensure an overall quiet and efficient functioning.
  • It offers wide coverage of 3’ x 3’ at a height of 18 inches, allowing proper and even growth.
  • It is efficient since it only uses a maximum power of 110W to function, allowing you to save on costs in terms of your energy bills.
  • It is thin and collapsible, allowing you to save plenty of space whenever the light is not in use at a given moment.
Cons
  • The lack of fans can actually make the unit easier to overheat even if there are other cooling solutions.

Get the Relassy LED:

5. Meizhi 300
5. Meizhi 300
5. Meizhi 300
Our Score

The Meizhi 300 is a full spectrum LED grow light made from aluminum and plastic. It is equipped with 60 pieces of LED lights that can provide good penetration as well as resistance in terms of rust and vapors. You can use this light for growing both hydroponic as well as soil-based plants.

It comes with a dual switch that you can toggle to navigate between the Veg and Flower lighting options. It also has a daisy chain feature that you can use to attach multiple lighting units to cover a wider area.

A cooling fan and heat sink further equip this unit, ensuring that the structure remains durable and efficient throughout its functioning without the risk of overheating. It has a lifespan of 50,000 to 100,000 hours.

Features:

Material:Aluminum, plastic
Settings:Veg and Flower
Coverage:3’ x 2’
Additional Features:Daisy chain
Warranty:3 years
Pros
  • It comes with a daisy chain feature that allows you to connect multiple lights with the same unit so that you can cover a greater area.
  • It comes with a cooling fan and a heat sink that can work together to prevent the light from overheating too much, thus ensuring durability up to 50,000-100,000 hours.
  • A dual switch is present on this unit that you can use to toggle between the Veg and Flower stages, making this unit convenient to use.
  • It is quite efficient since it uses only up to 119W of power while still providing strong lighting, helping you save on energy bills.
  • It comes with a three-year warranty period in case you need to make any repairs or replacements due to a manufacturing issue.
Cons
  • This unit does not have enough white lights to aid the growth process.

Get the Meizhi 300:

6. VIVOSUN 300W
6. VIVOSUN 300W
6. VIVOSUN 300W
Our Score

The VIVOSUN 300W LED grow light offers full-spectrum lighting for hydroponic as well as soil-based plants. It offers good and uniform coverage that can aid the growth process of plants no matter which stage they are in.

This grow light has LED chips and a cooling fan that can ensure that the unit works efficiently for up to 100,000 hours. Its 90-degree reflector can further help ensure that the unit provides even heating.

A daisy chain connection is also a part of this unit for collecting multiple lights. There are two switches for turning on the Veg and Bloom settings.

Features:

Material:Aluminum
Settings:Multiple, dual switch
Coverage:2’ x 2’ at 24”, 1.5’ x 1.5’ at 18”
Additional Features:Daisy chain
Warranty:3 years
Pros
  • This unit includes a daisy chain connection that you can use for connecting multiple lights to cover a wider area.
  • It comes with a cooling fan that can keep the entire unit cool and ventilated so that it does not overheat too much.
  • This unit is efficient in terms of energy savings and can provide durability and lighting for up to 100,000 hours.
  • It has two switches, one for Veg and the other for Bloom, that you can turn on separately or together depending on the stage of growth your plant is in. This makes this unit easy to use.
  • It comes with a warranty period of three years, allowing you enough time to see if you need to make any repairs or replacements in case of any issue.
Cons
  • The coverage area is not as much as some of the other LED grow lights.

Get the VIVOSUN 300W:

FAQs

Can I Leave My Grow Light on 24 Hours?

You should ideally not leave your grow light on for 24 hours as this can interrupt the natural growing cycle of a plant. Plants need to pause their process of photosynthesis regularly, which is why a dark period for a few hours is important.

While leaving the grow light on all the time can quicken their growth, it can also make them more vulnerable to diseases and damage. Your grow light will also run out of power quicker.

How Many Watts Does a 300 Watt LED Light Use?

How many watts a 300W LED light uses depends on the individual grow light itself. However, the power used is generally more than half of the power output of the lights, making them energy efficient.

What Is a 300 Watt LED Grow Light Equivalent To?

A 300W LED grow light is equivalent to 300W of high-intensity discharge (HID) grow lights. However, the former consumes much less power while the latter consumes 300W, making LED lights more efficient.

For specific plants, do check out the reviews for:
Best Grow Light for Succulents
Best Grow Light for Cactus