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A3i A3i PRO
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A3i Pro-1 led grow light

FOHSE A3i PRO

The Best Grow Lights in the Market Now Reimagined.

1500W Industrial LED Grow Light. Designed for advanced control capabilities with 7 Channel Spectral Tunning in High Bay Environments. Producing unbelievable yields at greater efficiencies with more control. Our flagship series, now upgraded with advanced controls and unlimited spectral tuning options.

More info Spec Sheet
A3i Pro-on led grow light

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Big Results Cultivated from Small Beginnings

The A3i Pro starts with industry-leading components, from our diodes to our drivers to our optics. Ensuring proven, tested quality built to last.
PPF: 4050 μmol/s (Options up to)
PPE: 2.3 - 2.8 μmol/J (Options up to)
DLC 3rd party listing
Accomplish More With Less

Because of its unprecedented power output and industry-leading coverage area, an A3i PRO system will always require less fixtures to produce similar (or better) light levels as an HPS system or LED system of similar size. Depending on your goals you can opt to use less fixtures to produce the light levels you’re accustomed to, or you can ‘fill the grid’ with A3i PRO luminaires and join the growing movement of pioneers setting harvest records under high-intensity lighting environments.

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A3i Pro-3 led grow light

Unmatched Canopy Penetration: Redefining Limits in Commercial LED Grow Lights


Revolutionizing Cannabis Cultivation: Overcoming Past Industry Limitations with Unparalleled Canopy Penetration. Discover the A3i PRO – The Ultimate Solution for Maximum Yields and Efficiency. Advanced Swiveling Light Bars Illuminate Neighboring Grow Plots for Optimal Canopy Coverage.
View: PPFD Maps (Actual & Simulated)
Polycarbonate Lenses 120° (Options up to)
Precision Light Planning

If there's one thing we've learned touring close to a thousand cultivation facilities around the world, it's that every environment is unique with its own special requirements. When you work with Fohse, our partnership kicks off with a thourough review of your grow room plans and your goals. Our light planning team heads into our simulation software to develop a 100% custom configuration tailor-fit to the unique needs of your operation. We can even take it a step further and predict your cost of cooling, cost of electricity, and how much you'll save owing an A3i system over time.

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A3i Pro-off led grow light

Ultimate control over your lighting capabilities.

The first of it's kind, unlock your plants true potential with full spectrum tunability. The A3i Pro has upgraded tunability consisting of 7 isolated spectrum channels including: UVA, green, far red and more providing customizable brightness and spectral output throughout the growth cycle.
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7 Channel Adjustable Spectrum Capabilities
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Wall-Mounted Network Control
A3i Pro-4 led grow light

Never buy another bulb again, the future is here


How much would you save if your grow never had to replace another bulb? Maintaining an HPS system is a burden to your bottom line due to:
  • Labor costs
  • Hazardous waste fees
  • Tedious cleaning
  • The cost of the bulbs themselves
  • The inevitable replacement of worn out ballasts

Over time that burden will far outweigh the low cost of an HPS system. Eliminate the burden entirely by switching to Fohse LED, the best grow lights for cannabis. Buy right, buy once .
L90: 50,000 hours (Based on diode manufacturer specs)
Bulbs Die Suddenly.
LEDs slowly fade.

To put the L70 of the A3i PRO into perspective, after 110,000 hours of use the fixture's output will have diminished to 2,940 umol/s, which is still 47% MORE POWERFUL than a fresh-out-the-box 1000W DE HPS bulb. And just how long is 110,000 hours? If you run 12/12 cycles every day that's 9,166 days ... 1,309 weeks ... 301 months ... 25.1 years of runtime and your system will still outperform an HPS system.

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A3i Pro-5 led grow light

Revolutionary Heat Control Technology for Commercial LED Grow Lights


Cut Costs and Enhance Efficiency: The A3i PRO features superior light output and heat management to revolutionize cannabis cultivation. Experience more light per BTU compared to traditional HPS systems, minimizing cooling expenses and strain on your cooling system.
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Passively cooled
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Thermally-conductive aircraft grade aluminum
16,416 in2 (Heat-dissipating surface area)
Make a Friend
Out of Heat

Unlike obsolete plasma grow lights the A3i PRO has no massive 'infrared spike' hidden on the far ends of its spectrum, meaning drastically less heat radiating down on your canopy.

Less AC Less AC

Without the IR spike cooking your upper canopy, you'll need far less cooling to compensate in order to keep your LSTs in an optimal range.

Less AC Even Warmth

A reduction in radiative heat and chilled air compensation makes for a much more even LST temperature throughout your upper to lower canopy.

Less AC More Bud Growth

An even canopy LST temperature promotes more RuBisCO reactions down your canopy, leading to more instra-canopy bud development.

Less AC More Cannabinoids

Cannabinoids are heat-sensitive. No more destructive IR spike means more cannabinoids make it to harvest.

Less AC More Terpenes

Terpenes are also heat-sensitive compounds and degrade at higher temperatures. Enjoy some of your best terp profiles ever with the A3i PRO!

Less AC Higher Harvest Quality

More cannabinoids and better terpene profiles means you'll enjoy some of your best harvests yet with the A3i PRO.

A3i Pro led grow light

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Efficiency Optimized.

The A3i achieves exceptional photosynthetic photon efficacy, rivaling top LED grow lights worldwide. How? Abundant diodes ensure optimal performance without overclocking, paired with our patented thermal management system. Cool diodes mean efficient diodes. With the A3i, you're guaranteed the market's most efficient and effective grow light system.
PPE: 2.3 - 2.8 μmol/J (Options up to)
DLC 3rd party listing
More Light, or Smaller Bills?

When you equip your facility with the most powerful AND efficient LED grow light available you have two paths forward available. First, you can configure your A3i PRO system to maintain the light levels you’re used to, and thanks to the A3i's PRO top-rated efficacy you'll produce that light at rockbottom prices. Second, you can configure your A3i PRO system to maintain the electrical expenditures you’re used to, and with the A3i’s PRO sky high efficacy that means you’ll produce far more light per watt than you’ve ever seen. Just wait and see what’s possible win a high-intensity light environment. Click here for a glimpse.

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water sampling unit

Elevate Plant Health with Our 4-in-1 Integrated Sensor for Temperature, Humidity, CO2, and PPFD Optimization


Empower Your Cannabis Cultivation: Gain real-time insights into temperature, humidity, CO2 levels, and PPFD with FOHSE's cutting-edge 4-in-1 Integrated Sensor. Fine tune growing conditions for maximum yields and quality. Seamlessly integrated with our PRO Controller, achieve unprecedented precision and control in indoor cultivation.
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Central Control Manual
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CONTROL UP TO 100 FIXTURES PER CONTROLLER
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EASY-TO-USE TAP & SWIPE INTERFACE
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MAKE BRIGHTNESS ADJUSTMENTS DOWN TO 30%
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CUSTOMIZE & AUTOMATE LIGHTING SCHEDULES
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SET CUSTOM SUNRISE & SUNSET PREFERENCES
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MAKE SPECTRUM SELECTIONS TO SUIT ALL PHASES OF GROWTH
A3i Pro-off led grow light

Dustproof. Watertight. Safe to Handle.

Designed to brave the toughest grow environments: The A3i PRO is built to endure intense conditions, resisting dust and moisture. This fixture is also able to withstand full submersion in 1 meter of water for unmatched reliability. Simultaneously, our PRO fixtures have a low operating temperature to allow for increased longevity and lower failure rates.
Ingress Protection Rating: IP66
Ingress Protection

Ingress Protection testing really puts our fixtures through the ringer : sandblasting, water spray, pressure washing, submersion, etc. Rest assured your A3i is well-protected from the hazards of your grow environment.

Dust intrusion protection

Impervious to small particulates 6/6

Liquid intrusion protection

Can withstand 1 meter submersion for 30 minutes 5/8
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A3i Pro led grow light 2

Power Surges? We're Ready.


The A3i PRO is a commercial LED grow light that comes twice-protected from electrical overload scenarios. Thrice-protected if you count our 5-year conditional warranty.
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Power surge protector
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Lightning surge protector
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A3i Pro-on led grow light

Easily Integrate With Your Enviroment

Installation is simple and the learning curve with high-quality LED is short. If you've never cultivated under high-intensity light levels, we have a long list of cultivation experts who have had success with our fixtures standing by to coach you and your team to incredible harvests.
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Swiveling heatsinks for custom footprints
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Sunset, sunrise, and manual dimming
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Network control for one-touch adjustments
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Custom integration option available
A3i Pro-4 led grow light

Seeing Is Believing.

Other light brands boast about being the best.
We won’t just tell you we’re the best grow light manufacturer. We’ll prove it.
Contact us today for a custom light plan.
Contact us today
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Full Technical Specs
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