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FGI Square 3 V2 Smart LED Grow light full spectrum plus 730nm Far Red

$ 149.00 $ 299.00 -51% OFF

FGI Square 3 V2 Smart LED Grow light full spectrum plus 730nm Far Red

$ 149.00 $ 299.00 sale

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The FGI Square 3 V2 is the best digitally controlled WiFi LED grow light on the marketplace today.

This powerful and compact grow light features built-in WiFi mesh technology (optional to use) that allows you to connect to the cloud and monitor your lighting levels and room temperature from anywhere in the world.

If you're serious about growing healthy, bountiful plants, the FGI Square 3 is the perfect choice.

The improved WeatherEFX WiFi LED Grow Lighting Controller, now easier to connect, can help you mimic natural sunlight conditions, promoting healthy plant growth.

The controller uses either local weather data or your own custom programming to adjust the light intensity and spectrum of your LEDs, simulating changing light conditions throughout the day. 

You can also create custom on/off schedules and scenarios, such as sunrise/sunset, to further customize your lighting. Plus, the controller's Cloud Intelligence feature allows you to check in on your lights from anywhere.

Take your garden to the next level with more natural lighting using FGI's weatherEFX.

Learn more about weatherEFX, and the Cloud Intelligence App on YouTube here: 


Botanists studied the effect of leaf shading and competitive growth responses here: Importance of Intermittent Shade to the Ecophysiology of Subalpine Herbs, A. K. Knapp, W. K. Smith and D. R. Young from the Journal: Functional Ecology.

"A reduction in sunlight caused by clouds, appears to result in substantial increases to water status, and thus CO2 uptake throughout the day. Plants benefit in periodic reduction of evaporative demand that result from natural periods of intermittent shade."



The Square 3 uses Cloud Intelligence, a SMART devices platform which connects the light to your phone for easy control. 

The Square 3 uses a 2.5ghz Wifi connection together with ble mesh to ensure reliable operation even when you are away from the light. 

Cloud Intelligence is used by many SMART devices makers such as Amysen, supplier of Wifi Smart Wall plugs which can be used to control fans, dehum, our single color FGI Far Red and UVA lightbars and any other 110V device that runs at less than 10amps. 

Square 3 Product Manual 

Wifi Controller Manual and Troubleshooting Guide 


  • Lightweight - just 13 lbs
  • Slim - 3" deep
  • Cool - won't add too much heat
  • 4 push button dimming settings


Our red + far red booster spectrum will help you grow the largest and most dense flowers. Super bright full spectrum 4000K diodes operate at an efficient 2.58umols/j plus 5% total 660nm red and 730nm far red diodes in a cool square within a square within a square design. This light can run full cycle from seedling to veg to flower.


The Square 3 is designed for flowering in 3'x3' spaces at up to 1000 umols/ms. (CO2 recommended for this light level). Or grow at 800 umols/ms without CO2. It can be used for Veg when dimmed. And when fully dimmed can be used over clones and starts too.

Below are PAR readings with the lights at three different distances. At 24" expect PPFD to be above 1000 umols/ms, but not as uniform.

At 30" PAR will be above 750 umols/ms. This is an ideal light level if not using supplemental CO2. These levels are equal to a typical HPS grow space.

At 36" light levels become more uniform from corner to corner but at 680 umols are below what we'd recommend for flower.

At 48", light levels are the most uniform and are perfect for mature veg plants. Use the built in dimmer to reduce intensity for young veg plants.

Product Manuals: 

Square 3 Product Manual 

Wifi Controller Manual and Troubleshooting Guide 


FGI Square 3 V2 WiFi LED Grow Light
Diodes (White)


  • Brand name: Shenzhen Lideda
  • Number of pieces 960
  • CCT 4000K
  • CRI 80CRI

Other color Diodes (Red)

  • Brand Name: Shenzhen Lideda
  • Number of pieces 256
  • CCT NA
  • Wavelength 655-665nm

Other color Diodes (FR)

  • Brand Name: Shenzhen Lideda
  • Number of pieces 64
  • CCT NA
  • Wavelength 730-745nm

Ratio mix white/red (%) 3:1

Product Warranty/Longevity

  • Warranty (years) 5 years
  • Lifetime (L-90) - in hours 50,000 hours

Photosynthetic Light Measurements

  • PPF Output* 1120 umol/s
  • PPF Efficacy* PPF 2.58umols/j

Photopic Light Measurements

  • Luminous Flux* 67,000 lm
  • Luminous Flux Efficacy 168 lm/w


  • Input Power Watts 310W
  • Input Voltage 110V
  • Cord length 8' (2.44m, 18AWG )
  • Plug type (note if bare whip) Molded 110V

Product Dimensions

  • Dimensions W x L x H (inches) 22 x 22 x 3.5
  • Weight (pounds) 13
  • Operating Temp range (F) -20℃ — +40℃
  • IP rating IP20

Rating CSA

Physical Dimensions

  • Package Dimension W x L x H (inches) 27 x 26 x 6.5

Dimming / Tuning: Push button / Wifi App

Product Warranty: 2 years against mfg defects.





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