Best LED Grow Light For 4X4 Grow Tents – Pictures, Specs, and More

Vivosun 4x4 grow tent

There are several LED grow lights designed specifically for 4×4 foot grow spaces. These specific grow lights typically use at least 450 watts of power, and spread the light uniformly across the grow space so that even buds on the sides of your tent get enough light to grow large.

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Why you can’t use cheap grow lights in a 4×4 space:

One of the biggest mistakes you can make when choosing a grow light for a 4×4 space is picking one that isn’t designed for 4×4 feet. The LED grow lights for this size space can be pricey, but buying a cheap grow light for 4×4 feet will be pricier in terms of the laughable yield you get. 

So if you’re on a tight budget (under $200), you’d be better off choosing a 600 watt HPS grow light instead of an inexpensive LED model that underperforms.

When you look at the light intensity and coverage area from cheap $100 grow lights, its not enough for anywhere near 4×4 feet. So stick with a proper LED model or an HPS if you’re on a budget. 

If you need a further explanation about plant light intensity requirements, My article about the minimum required light intensity (PPFD) for growing cannabis is a good explainer on light intensity.

The Best LED Grow Lights for 4×4 Grow Tents:

  1. Maxsisun PB4000 Quantum Board (Budget Choice)
  2. Mars Hydro TS-3000 Quantum Board (Bang For The Buck Choice)
  3. Timber LED Cypress 6 (High Power / Low Hang Height Choice)
  4. Spider Farmer SE-5000 (Bar-Design Choice)

Keep reading for details about each grow light:


Budget Choice: Maxsisun PB 4000

grow light for 4x4 maxsisun

One of the most inexpensive options to properly grow in a 4×4 foot grow tent – the Maxsisun PB 4000. It looks similar to other quantum board style grow lights because most manufacturers are now using this modern design. 

Why is the Maxsisun PB 4000 One of the Best Grow Lights for a 4×4 Grow Tent?

Affordability

The PB 4000 is one of the best options because of the modern design, but also because of the affordability. If you don’t mind having a grow light with less features than comparable models such as the Mars Hydro TS-3000 (below), then the PB 4000 is probably a good fit for you.

The Maxsisun PB 4000 is a close comparison to more expensive Mars Hydro and Spider Farmer, and uses a similar 400 watts from the wall. You won’t be able to dim this grow light, but you can always raise the height instead. Check out my article about grow light hang height to learn more about that.

Spectrum and Coverage

The spectrum is 3500K , 6500K, and 600nm red, which makes up a full spectrum light that’ll grow from seed to harvest. Its basically the same spectrum that all the higher priced options use.

The 400 watts is about 10% lower than close competitors like Mars Hydro or Spider Farmer, but it’s still enough to grow with. I wouldn’t want to go much below that in a 4×4 foot grow tent.

As you can see in the image above, the light intensity is pretty good for flowering at 18 inches hang height.

Will the Maxsisun PB 4000 get too hot for a 4×4 grow tent?

All grow lights above 200 watts make heat. You should have an inline fan and oscillating fan in your grow tent and it will be manageable.

PB 4000 Specifications:

Power Efficiency:
2.7 uMol/joule (high)
Warranty:
90 day money back / 3 year
Peak Light Intensity:~1089 ppfd @ 18in
Dimensions:
24″ x 21″ x 2.5″ inches
Power Draw:
400 watts

Voltage:

AC100-240v; 50-60hz

Pros and Cons of Maxsisun PB 4000 Grow Light:

Pros:

  • Great price for the power & coverage
  • Good warranty

Cons:

  • Can’t dim or remove drivers like more expensive competitors

Click Here to View or Buy the Maxsisun PB 4000 at Amazon


 

2. Mars Hydro TS-3000 LED Grow Light

grow light for 4x4 mars hydro ts-3000

(Click Here To View or Buy the TS-3000)

The largest model of the Mars Hydro TS series happens to be perfect for a 4×4 grow space. The TS 3000 is a great value based on what you get from it. You’re getting a new, efficient design at a pretty low cost for 4×4 feet of coverage.

Mars Hydro has since released a group of bar-style grow lights called the FC series which includes the FC-4800 model designed for a 4×4 foot space. The FC-4800 is a bit more expensive than the TS-3000 so I still think the TS-3000 represents the best value for a 4×4 foot space given there isn’t much difference between this and the newer FC-4800. But I encourage you to check them both out and see which best suits your needs. 

Getting back to the TS-3000, this LED grow light will thoroughly cover a 4×4 grow tent or 5×5 foot vegetative phase growing space. Let’s take a look at some of the Mars Hydro TS 3000’s features:

Why is the TS-3000 one of the best LED grow lights for 4×4 grow tents?

The most important factors immediately come to mind. Light intensity, white light spectrum, modern design, and cost.

grow light for 4x4

The light intensity (PPFD) on the Mars Hydro is stronger than the Maxsisun discussed above, but weigh that against the lower cost of a Maxsisun.

Light intensity is correlated to cannabis yield, so decide which factor is more important to you. At 400 watts vs 450 watts, the yield won’t be that much less with a Maxsisun.

At 11 pounds, all grow tents should be able to hang the TS-3000 with ease. These grow lights come with proper hanging equipment.

Great Features:

I always say you get what you pay for when it comes to grow lights. The Mars Hydro models have a nice feature that other models don’t have. It’s the extra cord length attached to the drivers, allowing you to hang them outside your grow tent and maintain a lower temperature inside the grow tent.

The Mars Hydro TS-3000 also has a dimmer on the driver to make easy adjustments for the cannabis veg or flowering phases.

The TS-3000’s intense light will ensure your plants don’t stretch because they’re hungry for additional light, meaning it’s easier to grow them at the size and height convenient for your 4×4 grow tent.

Will the Mars Hydro TS-3000 get too hot for a 4×4 grow tent?

Believe it or not, many growers are still using or transitioning from HPS grow lights that get considerably hot in grow tents, and thus expect LED lights to be the same. Quality LED grow lights, including the Mars Hydro TS 3000 are perfect for use in grow tents.

The slim design of the TS 3000 makes it efficient for dispersing heat. With that said, all grow lights release some heat, and you may want to consider placing an inline duct fan and filter in your tent to maintain an ideal growing environment. Several owners of the light have written reviews and nobody has complained about heat thus far.

Other Specifications Of The Mars Hydro TS 3000 LED Grow Light In Your 4×4 Grow Tent:

The quantum board design is the most modern on the market. Compared to older grow light designs, the quantum board design does not contain cooling fans, and the light intensity (PPFD) doesn’t fade as much as you get to the edge of the coverage area.

The efficiency, or micromoles (uMol) per watt, is higher on quantum boards than more classic designed grow lights. That means you’ll get more light for the amount of power you consume.

The Mars Hydro TS 3000 LED grow light is equipped with 684 High quality LED chips. The light pulls ~300 watts from the wall, and Mars Hydro claims 2.2g per watt yield, although cannabis yields generally vary widely.

grow light for 4x4 spectrum(Click Here to View or Buy)

The white light spectrum is scientifically proven better than pink/purple spectrum of the past. You get white light plus infrared with the TS-3000 grow light.

This LED grow light comes with a generous 3 year warranty and 30 day money-back guarantee. I know from personal experience that Mars Hydro responds quickly if you contact them.

In my opinion the Mars Hydro TS 3000 LED grow light is the second best all around LED grow light for 4×4 grow tents. All the features and capabilities come together to make a 4×4 growing experience easy and stress free.


Click here to see reviews and prices for the Mars Hydro TS-3000


Pros and Cons of Mars Hydro TS-3000 LED Grow Light

Pros:

  • Built using highly reliable materials
  • High intensity / PPFD numbers
  • Can be controlled using timer
  • Reported better yields by users
  • Worry free customer oriented warranty

Cons:

  • Doesn’t feature daisy chaining ability
  • No veg/bloom switch

My verdict

Over 100 growers have purchased this light and reviewed it highly.

I definitely recommend two Mars Hydro TS 3000 watt grow lights because with the features and capability offered, they’re a perfect fit for a 4×4 grow tent.


Click here to see reviews and prices for the Mars Hydro TS-3000


 

3. Timber LED Cypress 6 Grow Light

best grow light for 4x4 timber cypress 6

 

best led grow lights

My third choice is a powerful LED grow light designed for a 4×4 grow space. It’s the Timber LED Cypress 6. Timber LED is based in California and has been around for several years. They’re known for their built-to-order COB LED grow lights.

The Cypress 6 is Timber’s next-generation bar style design. Combine the white light spectrum, strong intensity, and quality product and you’ll see why Timber LEDs are a great choice. This would be the recommended grow light if you have a more flexible budget and a desire for high strength grow lights resulting in max cannabis yields. 

Why are the Timber LED COB Grow Lights One of the Best LED Grow Lights for 4×4 Grow Tents?

This true 540 watt LED grow light uses Samsung LED chips to cover your canopy in strong white spectrum light. The light intensity (PPFD) peaks around 840 uMols in the center (no hot spots!), while keeping the edges of your 4×4 grow tent almost as bright as the center. As you may notice with previous options, 540 watts is a bit more power than what’s really needed for a 4×4 grow tent, but it certainly won’t hurt if you’re trying to squeeze a maximum yield from your cannabis plants. 

Another great feature of this grow light is the ability to hang it so close to your plants without burning or bleaching them. The previous designs mentioned above are required to be hanged about 14 to 18 inches above the canopy. You can hang this Timber LED Cypress 6 grow light as little as 6 inches above your canopy with no issue. 

Timber LED grow lights are sufficient to get your plants through all stages of growth (You can read more about daily light requirements here), and the light is dimmable from 10-100% intensity if you want to adjust it.

Will the Timber LED Grow Light Get Too Hot for a 4×4 grow tent?

The bar design of the Cypress 6 is the most efficient design currently in use when it comes to heat dissipation for LED grow lights. 

All grow lights emit some heat, so you need a space fan and inline fan handy in your grow tent regardless of your choice. With that said, heat coming from these lights will be much more manageable than the older high pressure sodium (HPS) grow lights.

What Else You Should Know About Timber LED Grow Lights In Your 4×4 Grow Tent:

Timber LEDs are full spectrum lights built using high-quality materials. This is a hand made product compared to mass produced overseas product. It comes with a 3 year warranty and the company is based in the US.

best grow light for 4x4

 

 Timber Cypress 6:
Dimensions:45 x 41 x 4 inches
Weight:35lb
Available Spectrums:3000k, 3500k or 4000k
Coverage Area:Flowers 4ft x 4ft/ Veg 6x6ft
Power Draw540w
LED BrandSamsung
Cheapest Place to Buy:LED Grow Lights Depot

Along, with the perfect design for a 4X4 grow tent, high-quality light, performance capability and reasonable price mars hydro also offers 3 years of maintenance and customer support and 30 days money back for buyers.

Owners of Timber LED lights love them:

Some owners have left reviews on Timber LED’s site, and here’s what they had to say:

Written by Mike Green Grow on Apr 16th 2019

Wow I was blown away coming from a blurple Chinese light. It’s perfect for my 3×4. It’s well built. It’s like staring into the sun and its growing strong plants.

Written by SS on Aug 23rd 2018

Have almost a year using these lights. They procude the same quantity as a 600w HPS but the quality is definitely better! With low heat, energy efficient and rock solid parts/construction, these are the end all lights for indoor growing. Get the 3500K and changing lights will be a thing of the past! Can’t recommend more!!!

What quality plants are people growing with these lights?

timber led plant
Mobshine day 67 of flowering under a Timber LED grow light. Source: Instagram

 

timber led plant
Green Poison, day 27, under a #timberled 3500K spectrum. Source: Instagram

Click here to see reviews and prices for the Timber Cypress 6 at LED Grow Lights Depot


Pros and Cons of Timber LED Cypress 6 Grow Light

Pros:

  • Sturdy and Strong Build
  • Three Spectrum Options
  • Competitive Price
  • Highly intense light for better yield 
  • Cost effective in terms of power efficiency

Cons:

  • Not the cheapest option, but you will get what you pay for with this grow light
  •  

Click here to see reviews and prices for the Timber Cypress 6 at LED Grow Lights Depot


 

4. Spider Farmer SE-5000

 

(Click Here to View or Buy On Amazon)

My final recommendation for the best LED grow light for a 4×4 grow tent or grow space would be the Spider Farmer SE-5000. This option gives you the newer bar style design, 480 watts of true power, and a better price compared to the Timber Cypress 6 above.

Think of it as the happy middle between the older TS-3000 design and the newer high power Cypress 6 design. Spider Farmer is a brand that runs mass production so the value you get in the SE-5000 is the among the best you’ll find in a grow light of this style and power. 

I recommend this grow light as one of the best value picks for a 4x4ft space. I bought the smaller SF-2000 for my 2×4 foot grow tent so I know these lights well. You can read my full Spider Farmer review here.

Why is the SE-5000 Grow Light One of the Best LED Grow Lights for 4×4 Grow Tents?

 

To say it simply, the Spider Farmer SE-5000 meets all the requirements you’ll need to illuminate a 4×4 foot space properly. The light is strong enough, and the coverage is uniform, with minimal intensity fading across the canopy.

As you can see in the image above, peak light intensity is roughly 1300 micromoles in the center and between 500-800 micromoles in the 4 foot range. It’s plenty to grow you a respectable yield, and when you consider the price the SE-5000 becomes a very attractive option.

Are there stronger grow lights out there for 4×4 feet? Sure, but be prepared to pay top dollar. If you don’t mind paying extra, check out the HLG 650R.

Will the Spider Farmer SE-5000 Grow Light Get Too Hot for a 4×4 grow tent?

The bar design of the SE-5000 is the most efficient design currently in use when it comes to heat dissipation for LED grow lights. 

All grow lights emit some heat, so you need a space fan and inline fan handy in your grow tent regardless of your choice. With that said, heat coming from these lights will be much more manageable than the older high pressure sodium (HPS) grow lights.

What Else You Should Know About The Spider Farmer SE-5000 In Your 4×4 Grow Tent:

The SE-5000 is dimmable from 100% to 25% power. With that said, the only time I would dim this light is if I was growing seedlings, or if my plants were in the late flowering phase and growing too close to the light.

The light uses top-bin Samsung LEDs to illuminate your space. They emit full spectrum 3000K, 5000K, ultraviolet, infrared, and far red 660nm colors. The ultraviolet and infrared diodes will really help you grow top-shelf cannabis and they’re a rare feature on LED grow lights. 

The MOSO driver is the high quality industry standard for grow light drivers. This is where you’ll find the dimming screw for the SE-5000.

Overall, users of this light seem to be very satisfied and it’s undoubtedly one of the best grow lights for 4×4 grow tents.


Click here to View or Buy the Spider Farmer SE-5000 on Amazon


Pros and Cons of the Spider Farmer SE-5000 LED Grow Light:

Pros:

  • Strong intensity readings
  • Top quality
  • Power efficient 
  • 5 year warranty

Cons:

  • Not the cheapest option

Also Read:


My Verdict

This new quantum board technology is spreading like the plague, and for good reason. Growers have decided that this is the best way to grow.

I would definitely recommend the Spider Farmer SE-5000 for your 4×4 foot grow space.

Check out what growers have grown with these grow lights so far (Pictures from Instagram):

4x4 grow light yield

 

4x4 grow light yield


Click here to see reviews and prices for the Spider Farmer SE-5000 on Amazon


Considering a 3×3 or 2×4 foot grow tent?

I’ve also outlined the best grow lights for 3×3 foot and 2×4 foot grow tents, because I find many people consider multiple tents or different size grow tents.

 

Other Questions I Receive From Growers Considering Grow Lights For 4×4 Grow Tents:

             1. How Many Plants Fit in a 4×4 Grow Tent?

It truly depends how large you intend to grow the plants. For example, you can train one plant to grow very wide and take up half of the tent. In that case the answer is two. Otherwise I recommend giving each plant 2×2 feet of space, so you’d be able to fit four plants total in a 4×4 tent.

                2. How Many LED Watts Are Needed to Grow In A 4×4 Grow Tent?

Let me distinguish between LED watts and true watts. LED watts can be the number of watts in the title – which is a misleading marketing tactic – or it can represent the total watts of the LED chips. Both of those numbers are irrelevant for determining what’s needed in a 4×4 grow tent. Take a look at the true watts number described below:

Each manufacturer provides a true watts number for their grow lights. I Recommend 450 watts minimum based on the best LED grow lights that cover a 4×4 grow space effectively.

You can get by with a slightly lower powered light like the 400 watt Maxsisun PB 4000 mentioned above – but only if you’re on a budget. I really recommend 450 watts as the minimum.

                3. Do I need an oscillating fan for my 4×4 grow tent?

Yes! You need an inline fan and an oscillating fan. The oscillating fan will push air around and prevent mold and mildew spores from taking root. It’ll also provide the plants with a steady source of fresh air.

4. What Size Inline Fan Do I Need For a 4×4 Grow Tent?

I wrote a whole article on determining grow tent fan sizes here:  My guide to grow tent fans, carbon filters and installation. The minimum power inline fan you’ll need for a 4×4 grow tent is ~250 cfm. That’s assuming use of a carbon filter and one bend somewhere in the ducting. Bending the ducting more than one time will require a little  bit more power.

4. Is it better to grow with a grow tent or open space?

One big secret you likely didn’t know about grow tents is that the interior reflective mylar actually increases the light intensity (PPFD) on your plants. So whatever PPFD the grow light manufacturer is claiming, you can safely estimate up to 20% higher PPFD values if you’re using a grow tent. Grow tents also allow you to control temperatures and humidity more easily than an open space. I highly recommend using a 4×4 foot grow tent compared to an open space.

What else you’ll need after choosing a grow light for your 4×4 foot grow tent:

If you’re just getting started growing indoors, you’ll likely need a few more items in addition to your grow tent. The growing environment is crucial to the quality of your crop. You can run through my checklist here to make sure you have everything!

Cheers, and happy growing!

FAQ:

How Many Watts Are Needed To Grow Cannabis In a 4×4 foot Grow Tent?

Based on the best LED grow lights that currently cover a 4×4 grow space efficiently the answer is 450 watts minimum.

The long answer is that you shouldn’t put too much focus on wattage because there are grow lights that use 450 watts or more that won’t cover 4×4 feet properly. So I’d say wattage, coverage area, and light intensity are the main factors to consider together.

How Many Cannabis Plants Fit In A 4×4 Foot Grow Tent?

It depends how large you intend to grow the plants. For example, you can train one plant to grow very wide and take up half of the tent. In that case the answer is two. Otherwise I recommend giving each plant 2×2 feet of space, so you’d be able to fit four plants total in a 4×4 grow tent.

What Size Inline Fan Do I Need For A 4×4 Foot Grow Tent?

The minimum power inline fan you’ll need for a 4×4 grow tent is ~250 cfm. That’s assuming use of a carbon filter and one bend somewhere in the ducting. Bending the ducting more than one time will require a little  bit more power.

How Do I Lower/Raise Temperatures In My 4×4 Foot Grow Tent?

If your grow tent is too hot, try cooling the room where the tent is located by opening a window or using an air conditioner. If the grow tent is too cold you may need to buy a space heater for the room the tent is located in.

How Do I Raise/Lower Humidity In My 4×4 Foot Grow Tent?

You can control humidity in your grow tent by using a humidifier or dehumidifier. If you’re using more than one grow light, you can better control humidity spikes by turning your lights off 15-30 minutes apart instead of all at once.

Should I Use LED or HPS Grow Lights In A 4×4 Foot Grow Tent?

LED grow lights will cost more to cover a 4×4 grow tent, but they will use less electricity and generate less heat. HPS grow lights will cost less up front but use more electricity and generate more heat in your tent.

References

Nick

My name is Nick, and I'm a home grower who spends time writing about indoor growing tools and setups. My goal is for 420ExpertGuide to be a one stop shop for indoor growers to find the information they need.