FGI 730 NM Dedicated 30w 4' Far Red LED Grow Light Emerson Effect Pair

FGI 730 NM Dedicated 30w 4' Far Red LED Grow Light Emerson Effect Pair


Regular price $ 325.00 $ 299.00 Sale

We're excited to announce our new Hong Kong direct shipping program. This LED ships UPS express direct from our factory to you in about 5-7 days, usually less. Cost savings are passed along to you in our pricing.


The FGI 730nm Lightbar is the longest dedicated far red initiator bar on the market. It will fully cover a 4' wide grow tray in bloom. And up to 5' x 3' managing to the Emerson Effect. 

The 730nm Far Red Lightbar is designed for accessory canopy lighting and provides additional red energy outside of normal PAR (400–700nm).

Far Red Spectrum


This 4' long unit fits neatly between the bars of our various Uniformity Pro LEDs. And it can be used with any brand of full spectrum LEDs or even as a stand alone far red initiator. 

We recommend 2 units per 4x4 grow space for daytime enhanced flower lighting. 


These are well constructed units with a crystal glass lens cover to protect the diodes and allow for cleaning. The all aluminum frame dissipates heat. At 30 watts of input power the Lightbar sips energy too. They are IP65 damp safety rated. 

Each Lightbar is prewired with an 8’ cord and 110v plug and are stand alone. Separate timer/switches are recommended to control the light interval.


 Plants use phytochrome to detect and respond to red and far-red wavelengths. Phytochromes are signaling proteins that promote photomorphogenesis in response to red light and far-red light. Phytochrome is the only known photoreceptor that absorbs light in the red/far red spectrum of light (600-750 nm). (source: Wikipedia)

Far Red light is believed to create a competitive response in plants, pushing desirable terpene production and assisting in the formation of trichomes.  

Read more about Far Red and extended spectrum in this recent release from Design Lights Consortium: Read It Here

Emerson Effect

 The Emerson effect is the increase in the rate of photosynthesis after chloroplasts are exposed to light of wavelength 680 nm (deep red spectrum) and more than 680 nm (far red spectrum). When simultaneously exposed to light of both wavelengths, the rate of photosynthesis is far higher than the sum of the red light and far red light photosynthesis rates. The effect was early evidence that two photosystems, processing different wavelengths, cooperate in photosynthesis.

Dr. Robert Emerson, who taught at the University of Illinois, discovered that light on the far end of the spectrum, infrared light, boosted photosynthesis when combined with other wavelengths. Emerson’s primary observations included:

There are two chemical procedures that contribute to photosynthesis. These processes are hastened, and are more efficient, when the plant is exposed to far-red and infrared light.

The plant protein phytochrome absorbs red, far-red and infrared wavelengths; this protein is responsible for regulating flowering.

Modern indoor grow professionals have taken Emerson’s studies and applied it to their own gardens, finding that infrared light can also result in strong stem growth, tighter node formation and boosted flower yields.





PPF 72.1 umols/s 

100-277VAC,50/60 Hz



44.88”x 2.24”x 1.53”

4.4 lbs

Photometric Test Report Download 

Product Warranty (see our warranty here)

3 year warranty

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