10 Best INEXPENSIVE LED Grow Light for 4×4 Tents (How Many Watts)

Are you looking for the best inexpensive led grow light for 4×4 tent?, Then you have come to the right place. Probably you have many questions already regarding LED lights and grow tents. So, let’s not waste time and straight go for what is there to know about LED lights.

We reviewed hundreds of LED grow lights available on the market and created a simple list to help you pick the best led grow light for 4×4 tent.

Each product was evaluated across a variety of factors: Safety, Durability, Watts, Optimal Spectrum, Actual Power Draw, Lifespan, and much more. These are truly the best options out there. Surprisingly, Our most recommended products are inexpensive.

How Many LED Watts For 4×4 Grow Tent?

How many LED watts is needed for the 4×4 grow tent? How much wattage is too much, and how much isn’t? Where do I find the best led grow light ? What is 4×4 tent space? Which specific LED brand is perfect for my 4×4 tent? And I’ve heard that PPF is important, what is it? How many hours of exposure is required? 

All these questions are based on grow light. And they’re all confusing, because most sites have variable answers. But worry no more. This article helps answer every confusing question and provide a step-by-step guideline on how many led watts for 4×4 grow tent is needed.

how many watts do i need for a 4×4 grow tent? Generally, 1 sq ft of grow space requires about 32w of actual wattage of power for flowering. For the vegetation stage, you’ll need around half the power (25w).

4 feet x 4 feet = 16 square feet

Flowering stage: 16 square feet x 32 watts = 512 watts actual power. ( Recommended: 512W-650W actual power).

Vegetation stage: 16 square feet x 25 watts = 400 watts actual power. ( Recommended: 390W-450W actual power).

This means you need to get LEDs emitting an average of 512-650 wattage. However, it doesn’t mean this provides highest yields for your plants, hence the long answer.

There are many factors that come into play when considering LED power that offers the highest yield.

  • What’s the distance between the light and the marijuana plants?
  • Which plant(s) are you dealing with?
  • You need to know about the PAR (photosynthetic active radiation)
  • Also, get to know about PPF, and the difference with PPFD
  • What about the lighting spectrum? What are the best coloring for the plants you’re growing? 
  • What’s the plant’s growth stage (seeding, veg, or flowering)
  • How many hours of exposure is needed?

Best INEXPENSIVE LED Grow Light for 4×4 Tent

Image Name Key Features Price
4.1 VIPARSPECTRA UL Certified 1200W 1. Veg Coverage : 4.5’x4.5’ 
2. Meets UL rigorous testings
3. Optimal full spectrum lighting
4. VEG & BLOOM Double Channel
Check Price
1.1 MARS HYDRO TSW 2000W 1. Veg Coverage :  4x4ft 
2. Low energy consumption
3. Easy dimming & daisy chain

Check Price
2.1 MARS HYDRO TSW 3000W 1. Bloom Coverage : 4′ x 4′  
2. Max yield at 2.0g/watt
3. NEWEST SMD LED technology

Check Price
ViparSpectra-4x4-Led-Grow-L VIPARSPECTRA Dimmable PAR1200 1. Veg Coverage: 4×4’
2. High PAR/Lumen output
3. Optimal full spectrum light
4. Upgraded 3.2” front-fans

Check Price
3.1 MAXSISUN LED PB 4000  1. Flowering Coverage: 4 x 4ft
2. Silent & Reliable: No fans = No noise.
3. High efficacy rating of PPF per Joule

Check Price
5.1 Bloom Plus BP3000  1. Flower Coverage: 4 x 4ft
2. maximum output is 2.5g/w
3. Newest 1174 pcs Samsung 2835 diodes

Check Price
4.1 Phlizon CREE COB 3000W 1. Core Coverage: 4 x 4ft

Check Price

1. ViparSpectra 1200W LED Grow Light

Key Features

  • 4.5’x4.5’ vegetative coverage at 32”
  • 3.5’x3.5’ flowering coverage at 24”
  • UL Certified LED Light
  • Optimal full spectrum lighting
  • Ideal for All Growth Stage
  • VEG & BLOOM Double Channel
  • 30 days money back guarantee
  • 3 Year local warranty

One of the most popular lights, the ViparSpectra UL Certified 1200W is a the best LED grow Light for 4×4 tent as it covers maximum 4.5*4.5ft growing space. The full spectrum design has separate Veg and Bloom switch and providing light at all stages of plant development.

The 240 pieces of high-intensity 5W LEDs provide 90-degree pre-focused optics for precise spectral compositions and unrivaled performance. Apart from the electrical efficiency, it also guarantees longevity with 100,000 hours of a lifespan.

This ViparSpectra1200W can replace 800W HPS/MH light while consuming only 520W. Thus it is energy saver as well as cost-effective. Additionally, it has 4 high-speed fans and aluminum heat sinks to expel the generating heat. These provide instant cooling in the case of overheating and give you better control over the temperature zones. And being UL certified ensures the model has undergone testing and safety standards to guarantee safe operation.

Using Instruction

Acclimation Period: 44-48 inches above canopy, lighting 10 hours a day, Veg on/ Bloom Off.

Young Vegetative: 40-44 inches above canopy, lighting 12 hours a day, Veg on/ Bloom Off.

Vegetative Stage: 32-40 inches above canopy, lighting 18 hours a day, Veg and Bloom Both on.

Flowering Stage: 24-28 inches above canopy, lighting for 12 hours a day, Veg and Bloom Both on.

Note: You should observe your plants regularly, adjust the height and using hour to meet your plant’s need.


  • Easy Control and Installation
  • Durable Fire-Resistant Iron Housing
  • Reasonably Priced Comparing the Light Output
  • Advanced Cooling System For Heat Dissipation
  • Full Spectrum with IR, Red, And Blue LEDs


  • The lights performed pretty well in veg but needed just a bit more for flower

2. MARS HYDRO 2000W– 4x4ft Veg Stage

Key Features

  • Veg coverage: 4x4ft
  • Bloom coverage: 3.5×3.5ft
  • Ideal for All Growth Stage
  • Daisy chain function up to 15 light
  • NEWEST SMD LED technology
  • Low Running Costs

The Mars Hydro TSW 2000W is another Most used LED light for 4×4 grow tent available on the market.

The quantum board design offers a white light spectrum that provides the highest PAR/LUMEN output. Compared to the old individual red or blue LEDs, this newest technology offers 30% higher yields.

With the dimmer, you can adjust the brightness and intensity yourself to maximize growth. The intensity can increase by up to 20%. Moreover, 684 LEDs consume only 300W of power this saving up to 50% energy than other light.

The noise-free fanless design makes it suitable for indoor gardening. But no need to worry about overheating as the large aluminum boards can dissipate heat efficiently. Also, the easy setup is perfect for either beginners or experienced indoor growers.


  • Auto-Sensing Power Supply
  • Amazing Control Set Up for Wattage Adjustment
  • Two Waterproof and Dimmable Mean Well Drivers
  • High Reflective and Noise Free Design
  • Suitable for Large Rooms and Commercial Setups


  • Lesser Heat Management

3. MARS HYDRO TS 3000W– 4x4ft Bloom Stage

Key Features

  • Veg coverage: 5’x5′
  • Bloom coverage: 4’x4′
  • Ideal for Commercial Setups
  • Easy dimming & daisy chain
  • 2 waterproof Mean Well Drivers
  • Noise Free Fanless Board Design
  • Wideband Full-spectrum Light

Compared to the other models in this range, the Mars Hydro Light offers the most features at the lowest price.

The modern quantum board design uses Epistar LEDs to increase the light intensity of up to 20%. Not only that, but the evenly coverage also allows the plants to receive more energy without burning them.

The full spectrum light with the newest SMD LED technology provides the highest PAR/LUMEN output. Compared to older light, you can get a 30% higher yield with TS 3000W. It is also more scientific and energy-efficient, as it draws only 450W of power with 1016 LEDs.

It is a Perfect 4×4 LED Grow Light For Bloom stage and ideal for commercial use as well because of its high quality, full-spectrum light quality, and easy operation ( easy dimming & daisy chain function, up to 15 multi-lights connected).


  • Over 90% Light Energy Absorption
  • Uniform and Wide-Beam Light Distribution
  • Reflective Aluminum Hood to Improve the Light Efficiency
  • Easy and Quiet Plant Growth
  • Low Power Consumption and High Energy Efficiency


  • Power Switch Not Available

4. ViparSpectra PAR1200 Led Grow Light

Key Features

  • Vegetative Coverage at 40″ Height: 4x4ft
  • Flowering Coverage at 36″ Height: 3.5×3.5ft
  • Optimal full spectrum Light
  • Solid Construction & Efficient Cooling System
  • Big aluminum cooling heat sinks
  • 30 days return guarantee
  • 3 years warranty

Another most used led grow light from ViparSpectra, the PAR1200 is specially designed to produce high PAR output and coverage.

The optimal full spectrum comes with two separate light dimmers. The Veg and Bloom dimmers individually control the red, white and blue channels. You can use a timer to control them according to plant growth stages and requirements. Also, the IR LEDs are effective in the promotion of cell division, germination, leaf building, and flowering.

The secondary optical lens magnifies PAR and increases canopy penetration by up to 200%. Moreover, this product only consumes a maximum of 545W of power, compared to the traditional 800W of HPS/MH. The lifespan extended up to 100,000 hours.

Not only energy-efficient but it has also a better heat management system. The Upgraded 3.2″ front-fans with big aluminum cooling heat sinks make it run 70% cooler than HID lights.


  • No Loud Sounds
  • Daisy Chain Design
  • Durable Build Quality
  • Support Plant Germination
  • Dimmable Veg and Bloom Settings
  • Most Used Light for 4×4 tent


  • Few people claim for Insufficient Light Intensity

5. Phlizon 3000W COB LED Light

Key Features

  • Cree cob led lights
  • Extremely High PPFD (2522.8 umol/m²s)
  • Full spectrum lamp integrated bead
  • Smaller thermal resistance
  • Less light attenuation
  • 30 days money back guarantee
  • 2 years warranty

Phlizon CREE COB 3000W led grow light is also very popular for its high quality and efficient features. Besides, the COB or Chip On Board circuits LEDs are more efficient and much brighter than traditional LEDs.

The Phlizon offers higher brightness and smaller thermal resistance. The full spectrum light has blue, red LEDs with a few IR, UV, and white LEDs as well. Using Veg and Bloom buttons, you can easily switch between light profiles at different growth stages.

As the LEDs have less light attenuation and longer life, it suffers less from burnout. Also, the UV protection, fire-proof PC Cover and metal frame ensure more durability, safety, and long-lasting performance.

Due to its maximum energy-saving effects, the actual power consumption is only 600W. Moreover, it is more energy-efficient than HPS, HID, and MH lights. Maximum It can cover 4.2*4.2 ft Grow Area.


  • Lightweight and Fire Resistant Build
  • Monitor for Both Temperature and Humidity
  • Adjustable Rope for Light Elevation
  • Longer Lifespan of ≥ 50,000 Hours
  • High PPFD Value for Faster and Better Plant Growth
  • Ensure Maximum Plant growth


  • Poor Ventilation

6. HLG Quantum Board LED Grow Light

Key Features

  • Quantum boards with Samsung LM301H
  • Wattage output from 200 to 500 watts
  • Reliable Passive Cooled Design.
  • high efficiency lumens per watt
  • Full-spectrum White and 660nm Red
  • 3-Year Warranty

If you are thinking about going all out and spare no expense on your indoor garden, then go for the HLG 550 V2. Its price may fall on the higher range, but you’ll get the best led light with unrivaled quality and features from this model.

The HLG 550 V2 has 4 custom-designed high-efficiency white light quantum boards with Samsung LM301B and Deep Red LED. The perfect full spectrum has 3500K white light plus 660 nm deep red LEDs for enhanced flowering. The V2 model draws fewer watts of power and exudes more light.

With a 4.5*4.5ft core coverage area, the light evenly spreads all over the grow space. Using the Meanwell driver, you can decrease the intensity by 50%. Not just output, the actual power consumption also gets halved while in the dimmable state. It draws 480W of actual power and 240W when dimmable, which is equivalent to a 1000W HID system.

So in actuality, it costs far less to operate and generate far less heat too.


  • Fast and Rapid Growth for Plants
  • Quality Design Ensuring Low Temperature
  • Suitable for Both Vegetation and Harvest Growth
  • Usage of More Green and Yellow Light
  • Upgraded INVENTRONICS Power Supply


  • Very Expensive

7. Spider Farmer SF4000 LED Grow Light

Key Features

  • Samsung LM301B Diodes
  • High Quality Yields
  • Low Running Costs
  • Customized Dimming Design
  • Well Made Construction
  • 3 years of after-service

Want the power of Samsung LM301B diodes, but can’t invest that much money? Don’t worry, there are better alternatives out there, you can consider Spider Farmer SF-4000.

The Spider Farmer SF-4000 has a quantum board design that comes with Samsung LM301B LEDs. The full spectrum light including blue, white, red and IR lights provides 50% higher yields with less energy, compared with other red/blue lights.

One of the best features is its uniform light coverage. The large quantum board has evenly placed diodes for better light distribution. It is a very suitable light for 4×4 growing area and can cover 4 to 6 cannabis plants effectively.

Compared to traditional light, quantum board LED have a higher level of energy efficiency. Consuming only 456W of power, the SF-4000 also comes with better micromoles/joule as compared to the grow lights in the market.

Waterproof and electric shock proof covers on wires ensure higher safety. The cooling system management and durable build guarantee a 50% longer lifespan compared with other brand lights.


  • Heavier Yields on High-Quality Crops
  • Unique Fan Less Design
  • Meanwell Driver for Dimming Function
  • Durability Test to Ensure Perfect Operation
  • No Assembly Required


  • No Fans So Light Can Get Too Hot

8. YINTATECH 1500W – Inexpensive LED Grow Light

Key Features

  • Core Coverage Area: 4.5×4.5ft
  • Full Spectrum and Dual Switch
  • No Reflector to ensure safety
  • Isolated power supply
  • Built-in 3 high-speed silent cooling fans
  • 3.0mm thickened aluminum base plate
  • Comes with a hygrometer thermometer

YINTATECH 1500W is considered the best inexpensive led grow light for 4×4 tent available in the market now. If you have a budget problem, but at the same time you want a quality product, it’s for you.

However, the Yintatech 1500W has a wider application. As it can be used for both water-soluble culture and soil culture.

It has a full spectrum design producing PAR of 380-800nm with universal Blue Red IR UV and white light. The IR and UV LEDs promote the plant’s defense mechanism and the blue and red LEDs help plant growth. The dual switch and daisy chain design enhance performance and higher yields.

With 150pcs 10W double-chip LEDs, It provides a bright light and core coverage area of 4.5*4.5ft. Along with the extended lifespan up to 50,000 hours, it can save 80% of the electricity compared to the HIS lamps.

It has some great safety measures in place. 3 built-in high-speed quite cooling fans, metal cooling heat sinks, and aluminum plate work well for better heat dissipation. They also protect the light from high temperatures and being noisy.


  • Built-In Isolated Power Supply
  • Adjustable Rope Hanger
  • Suitable for All Stages of Plant Growth
  • Extremely Reasonable Price
  • Energy and Heat Efficiency 


  • Not Many Extra Features Included

9. BESTVA 1000W Full Spectrum LED Grow Light

Key Features

  • Dual-chip(10W) LEDs
  • VEG & BLOOM Switches
  • 3mm thickness aluminum plate radiator
  • Powerful Cooling System
  • 90 days return guarantee
  • 3 years warranty

We all know that BESTVA LED Grow Light is most popular for indoor gardening and It is consider another best inexpensive led grow light.

Features of dual chips (10w) LEDs provide much brighter and efficient light than traditional 3w and 5w leds with highest PAR/LUMEN out per watt. It has nine Nine different bands of LEDs which provide full spectrum light, just like in the natural sunlight.

You can grow any type of plants, vegetables and flower at all growth phase of plant. There are two switches, VEG and BLOOM. The VEG is ideal for growing and Bloom is perfect for seedling / flowering. But if your plants need more energy, you can turn on both switches.

Most of indoor grower worries about heat. But this light will minimize your worries because they use a 3mm thickness aluminum plate radiator which helps better heat dissipation.

Most important, Holes on the aluminum plate and the glass make heat convection. As a result, the LEDs able to run 50 to 60℉ lower than any other competitive LEDs.

If you place the light at 24 inches above the canopy, it will only consume 185 watts, No Needed daisy chain. They are confidence about the quality of products and provide 90 days satisfaction or money back guarantee and 3 years warranty.

Using Instruction:

Germination Stage: 26″ -30″ above the plants and lighting for 15-18 hours a day.

Growing Stage: 20″-26″ above the plants and lighting for 15-18 hours a day.

Flowering Stage: 18″ -24″ above the plants, recommended lighting for 12-14 hours a day.


  • Highest Par/Lumen Output Per Watt
  • No Extra Ballast Needed
  • Useful Dimmer Switch Feature
  • Approximately 100,000 Hours of Lifetime


  • Not Waterproof

10. King Plus 1500W LED Grow Light

Key Features

  • Veg and Bloom switches
  • Energy-saving technology
  • Multiple high-speed mute fans
  • Upgraded aluminum radiators
  • Advanced cooling system
  • free return for 90 days
  • 3 years Professional Service

High end, high yield – whatever the distinction, the King Plus LED Grow Light is here to provide you with maximum output at a cheap price.

Including UV+IR, the full spectrum light ranges from 380 to 780 nm which is equal to natural sunlight. It provides two different veg and flowering growth switches. The Veg switch uses blue and white LEDs for seeding and the Bloom switch uses red and white LEDs for flowering.

The effective cooling system helps the safety measures a lot. The multiple heat sinks, high-speed mute fans, upgraded aluminum radiators enable the light bulbs to work at a lower temperature. So there’s less chance of plants burning down and more chance for healthy growth.

The 300 high tech double-chip 10W LEDs provide brighter light than any traditional 2000W HPS. However, the great light output only consumes 615W of actual power, saving you a lot of energy and money as well. Along with longer-lasting and durable build, It has an expected lifespan of 100,000 hours.

Using Instruction

Germination Stage: 32″ -45″ above the plants, lighting for 14-18 hours a day.

Growing Stage: 30″-42″ above the plants, lighting for 12-14 hours a day.

Flowering Stage: 28″ -38″ above the plants, lighting for 9-12 hours a day.

Fruiting stage: 28″ -38″ above the plants, lighting for 7-8 hours a day.


  • Large Coverage Area
  • Adjustable Height and Lighting Region
  • Efficient Electricity Use
  • Quiet Operation
  • Effective Heat Dissipation


  • None

What’s PPFD? How Is It Measured? And How Much is Needed for Best Yield?

The PPFD is the amount of photons being absorbed by the plants, that’s necessary for photosynthesis. And it’s influenced by area coverage of the growing area (in square feet).

While PAR (photosynthetic active radiation) is the amount of radiation reaching the plants for usage in photosynthesis, the PPFD is the exact amount of photons absorbed by the plants as per the area coverage of the tent.

Therefore, the PPFD is the most important aspect to take measurements of. This is the total amount of photons usable by your plants, which depends on the growth stage – seeding, vegetation, and flowering.

For healthy plant growth cycles, and best yields, the following guide is advisable:

a) Seeding – 200 to 400 PPFD

b) Vegetative plant growth – 400 to 600 PPFD

c) Flowering (or budding stage) – 600 to 900 PPFD

Note that the PPFD is influenced by the distance from the plants. The closer the light, the better. You can always measure the effectiveness of the distance using a PAR meter. This is available on Amazon at great price.

Any figure that’s more than 1200 PPFD is bad for the plants. You don’t wanna make your plants wither due to too much light. This forces plant to use their energy in getting rid of excess light rather use the same energy for growth. It leaves it stunted.

Does Interior Reflections (Mylar etc.) Affect the PPFD Intake?

Of course, yes. With the right reflector materials, your cannabis plants will experience the best yields. Similarly, if your tent’s interiors absorb too much of the light, then you’ll need to increase the wattage, to cater for the lost heat energy.

Most importantly though, it’s advisable to focus on light spectrum intake, and the required spectrum from the LEDs to the plant’s canopies.

That is, don’t be bothered by the amount of light released into the entire tent, because some of it get lost in the tent’s walls. Focus on the canopies, and how much PPFD light spectrum is absorbed by the plant.

When using the PAR meter, make sure to place it somewhere near the plant’s canopies. This gives you the accurate measurement of how much photosynthetic light reaches the plant.

Where Do I Get the Best LED Light for 4×4 Grow Tent?

Well, there are lots of highest yielding LED grow light brands on the market, and each comes with its unique features. Most of them are energy efficient, for better effectiveness on plant growth. You can also get them for a better price.

As expected, there are a number of factors to consider on how to choose the best light for 4×4 grow tent. The most important factor is the LED’s capability to change its wattage as per hours exposed to the marijuana plant.

Although most LEDs have constant power or heat energy release, some have controls where you can control how much wattage you want released, in terms of hours, which depends on the growth stage.

That is, since seeding, vegetation and flowering stages require different wattage (and PPFD), it’s best to go with panels that come with installed with controls for different power release. Its price is affordable. Opt for one that’s energy efficient.

Also, the LED panel should also have height changeability where you can either increase or decrease its height from the plants’ canopies.Such are available on Amazon market.

How to Choose the Best Light for 4×4 Grow Tent

All the best led grow lights doesn’t necessarily mean the best for YOU! For it to be that, you need to compare your requirements with the features the model offers.

Now that you have seen the models, consider these factors before making your purchase. That way, you won’t buy something only later to regret it.


An light with a different wavelength ensures maximum growth. Plant from stage to the stage requires different light spectrum –a full spectrum includes red, white and blue lights, also infrared and ultraviolet lights.

Also, full-spectrum lights come with adjustable settings with VEG and Bloom switch, providing flexibility in the growth process. Nowadays most high-end models are engineered to work exceptionally well in flowering as well as vegetative plant growth cycles.

Light Intensity

Having too much light or having not enough light – both can be harmful to the growth of your plants. You need to have the right amount of light intensity for the plants to be healthy. To get a balanced intensity, you need to consider the plant’s growth stage and the size of your grow space.

The most ideal intensity (lumens) ranges from 300 to 800 lumens for every square foot.


PAR refers to ‘Photosynthetically Active Radiation.’ It is the range for all the different wavelengths/colors of light that plants use for photosynthesis. Your light should have all the different wavelengths/colors but especially important are the blue wavelengths for vegetative growth and the orange/red wavelengths for the flowering process. You should Look for High lumen and High PAR Value Features before buying any light.

The plants under the middle of the light receive the full PAR value while those at the edges may get less light. A high PAR is not necessarily better. Actually, high quality light have lower PAR values because the power is distributed evenly rather than concentrating in the middle.

Energy Efficiency

The LED grow lights operate 8+ hours per day and it takes a huge toll on your electricity bills. In that case, look for an energy-saving light providing optimum performance. Your light should use less power but offer mimic of natural light and full coverage.

Moreover, it must be able to operate for at least 10 to 12 hours each day. Before buying, search up the wattage of that model to find out how much power the light will consume.

Easy Installation and Maintenance

Usually, cheap items burn out faster and need to be installed frequently. That way maintenance costs also keep piling up. High-quality lights may be more expensive but they’ll save you from any extra cost.

Also, look for lights that are easier to install so that you don’t have to call professionals and pay extra charges. If you know how to set up and care for your lights, it’ll save you tons of time, money and energy while growing your plants.

Material Quality

The ideal light for 4×4 tent should be durable, environment-friendly, and made up of good quality material. Consider the product information provided on the instruction manuals or boxes of the lights.

Also, check if the products have undergone safety tests and whether they abide by the highest industry standards or not. You’ll know a high-quality product from its reputation and performance giving you the best value for money.


Indoor gardening got a lot easier with LED light. There are less fire hazard and more light for your plants now. No wonder the popularity of grow lights keeps increasing!

So, here is all the information on the best inexpensive led grow light for 4×4 tent at your fingertip. The products above are all highly rated and reviewed by satisfied customers and offer high-quality features and performance. Also, make sure to read our buying guide to consider some useful factors. Maybe you can even pick up a bit of tip and tricks.

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