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Grow Light Science PROGROW 320 Watt LED Grow Light
Grow Light Science PROGROW 320 Watt LED Grow Light

Grow Light Science PROGROW 320 Watt LED Grow Light

See More By: Grow Light Science
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$395.00
Lowest Price on the Web: $290.00 $395.00 & Free Shipping

The Grow Light Science PROGROW 320 LED Grow Light is a full spectrum, high performance lighting solution for commercial or home indoor gardens or grow operations. The PROGROW 320's form factor allows for scalability and multiple grow room and tent configurations. This grow light’s incredible light output (PPF), spectral distribution, and efficacy will deliver amazing results to your plants for an affordable price.

Availability: Out of Stock
Warranty: 5 Year
Guaranteed Lowest Price!

Veg Footprint: 3' x 6'

Flower Footprint: 2.5' x 5'

Watts: 320W

Spectrum: Full

Grow Light Science PROGROW 320 LED Grow Light

The Grow Light Science PROGROW 320 LED Grow Light is a full spectrum, high performance lighting solution for commercial or home indoor gardens or grow operations. The PROGROW 320's form factor allows for scalability and multiple grow room and tent configurations. This grow light’s incredible light output (PPF), spectral distribution, and efficacy will deliver amazing results to your plants for an affordable price.

Recent studies have shown that PPFD levels as high as 1,500 umols/m2/s will deliver a proportional increase in yields as long as other critical factors are kept in balance, such as CO2, water, and nutrients. The PROGROW 320 easily delivers PPFD levels over 1,000 umols/m2/s, whether arranged individually or in a multi-unit array. All growers should study and experiment within their grow space to devise the best combination of inputs. 

Key Features

  • GLS HI-RED spectrum
  • Top Bin LEDs 
  • Built in dimming control knob
  • Dual RJ12 Ports For External Control
  • High CRI - 90
  • 5 Year Warranty
  • 120 Day Satisfaction Guarantee

Product Features

  • PPF Efficacy - 2.61 umol/j
  • PPF - 848 uol/s
  • CRI - 93
  • Input Power - 325W @120V 2.7A
  • Input Voltage - 100-277V
  • Light Distribution - 120°
  • Lifetime - Q90>36000 hrs
  • Max Ambient Temp - 95°F
  • Dimming - 0-10V / 0-100%
  • IP Rating - IP66

Recommended Hanging Height

  • Seedling - 36" to 48" hanging height, 200 to 300 umols/m2/s
  • Vegetative - 24 " to 36" hanging height, 300 to 600 umols/m2/s
  • Flower - 12" to 36" hanging height, 600 to 1,500 umols/m2/s (Note: CO2 supplementation is necessary for higher PPFD levels)

In order to adjust and acheive target PPFD levels from phase to phase throughout the cultivation cycle, it is recommended that growers use a PAR meter in combination with hang height and dimming. The PAR maps and tent configurations shown below are meant to provide general guidance.

PPFD Levels

2' x 4' Reflective Wall Area
Mounting Height = 20"
Average PPFD = 1,038 umol/m2/s

Grow Light Science PROGROW 320 Specifications

Veg Footprint 3' x 5'
Flower Footprint 2’ x 4’
Power 325 watts
Spectrum
 Full
Light Output 848 umol/s
Dimensions 47.2" x 14" x 3"
Weight 11.8 lbs
Manufacturer's Warranty 5 years

Warranty Policy

Subject to the exclusions set forth on the Grow Light Science website www.growlightscience.com, Grow Light Science LLC. (“Grow”) warrants its light emitting diode (LED) luminaires, including the LED arrays and the LED drivers and integral control devices (“LED Luminaire(s)”) for all Grow products, to be free from defect in material and workmanship (the “Limited Warranty”) for a period of five (5) years from the date of shipment from Grow facilities.  Grow warrants its dimmers and other LED Luminaire controlling products (“LED Controllers”) to be free from defect in material and workmanship for a period of one (1) year from the date of shipment from Grow facilities.  The LED arrays in the LED Luminaire(s) will be considered defective in material or workmanship only if a total of 15% or more of the individual light emitting diodes in the LED Luminaire(s) fail to illuminate or any standard finish or coating on a product shows cracking, peeling, excessive fading or corrosion defects during applicable warranty period.

Return & Exchange Policy

If at any time during the first 120 days following delivery of GROW 200 or GROW 300 product you are dissatisfied, you may elect to return the product for a full refund (excluding shipping). A maximum of two (2) fixtures may be returned. Product must be in "like new condition"  (no dirt, marks, scratches, or damage of any kind). Product must be returned with all original packaging and contents. An RMA (return merchandise authorization) must be requested of and issued by Grow Light Science prior to return. For RMA during 120 day satisfaction guarantee, please send an email request to: support@growlightscience.com. 

For warranty replacements, please send an email to support@growlightscience.com for complete instructions. If approved, our team will issue an RMA (Return Merchandise Authorization) and replacement product will be sent out upon receipt of the defective units. Grow Light Science will either replace or repair the defective unit based upon our discretion. Items returned without an RMA number will be rejected and returned to sender. In situations where replacements are needed prior to the return of defective product, please call us direct at (419)343-3294 to submit a request. Customers requesting an advance replacement will be required to provide payment information for a replacement unit which Grow Light Science will keep as a pending charge for the original cost of the item. Once we receive the defective item, the unit will be examined for accessories and physical damage. If after review all accessories are present and the unit is in “good” condition, then the pending charge will be voided. If Grow Light Science does not receive the defective unit back within 25 days from the shipment of the replacement, we will formally charge your credit card and the replacement unit will be yours to keep. Exemptions apply.

 Written quotes (mailed, emailed or faxed) may have modified return/exchange conditions that will supersede this return/exchange policy.

Free Shipping

We are proud to offer FREE SHIPPING on MOST orders of $100 or more ($200 or more for AC Infinity) with a physical address (no P.O. Boxes) within the contiguous United States. Please note some exceptions do apply.

That means everywhere in the United States besides Alaska, Hawaii, and Puerto Rico. If you live in one of these locations, please contact us for a shipping quote.

Please note: We process all website orders Monday - Friday, 7 am - 4 pm. If you placed an order over the weekend or after hours, it will not get processed until the next business day.

Price Match Guarantee

We work very hard to ensure that we offer the absolute lowest prices online.

That means that if you find any authorized online retailer that has a lower price than us, just let us know and we'll match their price!

Please note some restrictions apply and this does NOT apply to any auction, discounter, or market platform including eBay, Amazon, Alibaba, AliExpress, etc.

For additional details please see our full Price Guarantee Policy here.

Description

Veg Footprint: 3' x 6'

Flower Footprint: 2.5' x 5'

Watts: 320W

Spectrum: Full

Grow Light Science PROGROW 320 LED Grow Light

The Grow Light Science PROGROW 320 LED Grow Light is a full spectrum, high performance lighting solution for commercial or home indoor gardens or grow operations. The PROGROW 320's form factor allows for scalability and multiple grow room and tent configurations. This grow light’s incredible light output (PPF), spectral distribution, and efficacy will deliver amazing results to your plants for an affordable price.

Recent studies have shown that PPFD levels as high as 1,500 umols/m2/s will deliver a proportional increase in yields as long as other critical factors are kept in balance, such as CO2, water, and nutrients. The PROGROW 320 easily delivers PPFD levels over 1,000 umols/m2/s, whether arranged individually or in a multi-unit array. All growers should study and experiment within their grow space to devise the best combination of inputs. 

Key Features

  • GLS HI-RED spectrum
  • Top Bin LEDs 
  • Built in dimming control knob
  • Dual RJ12 Ports For External Control
  • High CRI - 90
  • 5 Year Warranty
  • 120 Day Satisfaction Guarantee

Product Features

  • PPF Efficacy - 2.61 umol/j
  • PPF - 848 uol/s
  • CRI - 93
  • Input Power - 325W @120V 2.7A
  • Input Voltage - 100-277V
  • Light Distribution - 120°
  • Lifetime - Q90>36000 hrs
  • Max Ambient Temp - 95°F
  • Dimming - 0-10V / 0-100%
  • IP Rating - IP66

Recommended Hanging Height

  • Seedling - 36" to 48" hanging height, 200 to 300 umols/m2/s
  • Vegetative - 24 " to 36" hanging height, 300 to 600 umols/m2/s
  • Flower - 12" to 36" hanging height, 600 to 1,500 umols/m2/s (Note: CO2 supplementation is necessary for higher PPFD levels)

In order to adjust and acheive target PPFD levels from phase to phase throughout the cultivation cycle, it is recommended that growers use a PAR meter in combination with hang height and dimming. The PAR maps and tent configurations shown below are meant to provide general guidance.

PPFD Levels

2' x 4' Reflective Wall Area
Mounting Height = 20"
Average PPFD = 1,038 umol/m2/s

Grow Light Science PROGROW 320 Specifications

Veg Footprint 3' x 5'
Flower Footprint 2’ x 4’
Power 325 watts
Spectrum
 Full
Light Output 848 umol/s
Dimensions 47.2" x 14" x 3"
Weight 11.8 lbs
Manufacturer's Warranty 5 years

Warranty & Return Policy

Warranty Policy

Subject to the exclusions set forth on the Grow Light Science website www.growlightscience.com, Grow Light Science LLC. (“Grow”) warrants its light emitting diode (LED) luminaires, including the LED arrays and the LED drivers and integral control devices (“LED Luminaire(s)”) for all Grow products, to be free from defect in material and workmanship (the “Limited Warranty”) for a period of five (5) years from the date of shipment from Grow facilities.  Grow warrants its dimmers and other LED Luminaire controlling products (“LED Controllers”) to be free from defect in material and workmanship for a period of one (1) year from the date of shipment from Grow facilities.  The LED arrays in the LED Luminaire(s) will be considered defective in material or workmanship only if a total of 15% or more of the individual light emitting diodes in the LED Luminaire(s) fail to illuminate or any standard finish or coating on a product shows cracking, peeling, excessive fading or corrosion defects during applicable warranty period.

Return & Exchange Policy

If at any time during the first 120 days following delivery of GROW 200 or GROW 300 product you are dissatisfied, you may elect to return the product for a full refund (excluding shipping). A maximum of two (2) fixtures may be returned. Product must be in "like new condition"  (no dirt, marks, scratches, or damage of any kind). Product must be returned with all original packaging and contents. An RMA (return merchandise authorization) must be requested of and issued by Grow Light Science prior to return. For RMA during 120 day satisfaction guarantee, please send an email request to: support@growlightscience.com. 

For warranty replacements, please send an email to support@growlightscience.com for complete instructions. If approved, our team will issue an RMA (Return Merchandise Authorization) and replacement product will be sent out upon receipt of the defective units. Grow Light Science will either replace or repair the defective unit based upon our discretion. Items returned without an RMA number will be rejected and returned to sender. In situations where replacements are needed prior to the return of defective product, please call us direct at (419)343-3294 to submit a request. Customers requesting an advance replacement will be required to provide payment information for a replacement unit which Grow Light Science will keep as a pending charge for the original cost of the item. Once we receive the defective item, the unit will be examined for accessories and physical damage. If after review all accessories are present and the unit is in “good” condition, then the pending charge will be voided. If Grow Light Science does not receive the defective unit back within 25 days from the shipment of the replacement, we will formally charge your credit card and the replacement unit will be yours to keep. Exemptions apply.

 Written quotes (mailed, emailed or faxed) may have modified return/exchange conditions that will supersede this return/exchange policy.

Free Shipping

Free Shipping

We are proud to offer FREE SHIPPING on MOST orders of $100 or more ($200 or more for AC Infinity) with a physical address (no P.O. Boxes) within the contiguous United States. Please note some exceptions do apply.

That means everywhere in the United States besides Alaska, Hawaii, and Puerto Rico. If you live in one of these locations, please contact us for a shipping quote.

Please note: We process all website orders Monday - Friday, 7 am - 4 pm. If you placed an order over the weekend or after hours, it will not get processed until the next business day.

Price Match Guarantee

Price Match Guarantee

We work very hard to ensure that we offer the absolute lowest prices online.

That means that if you find any authorized online retailer that has a lower price than us, just let us know and we'll match their price!

Please note some restrictions apply and this does NOT apply to any auction, discounter, or market platform including eBay, Amazon, Alibaba, AliExpress, etc.

For additional details please see our full Price Guarantee Policy here.

Customer Reviews

Based on 1 review
0%
(0)
0%
(0)
100%
(1)
0%
(0)
0%
(0)
J
J.W.
ProGrow 320 Back up lamp

Bought the ProGrow 320 in Sept 23. Had this lamp for a full clone to flower grow and it performed decently.
Had it going in the same 2x4 tent for the past 6 weeks taking two plants from seed to flower. I noticed during my ProGrow 320 grow the "power" just didnt seem there.
Same thing in my current grow. Cant seem to hit 1000ppfd on my canopy at 20" or even 18". Per GLS specs, I should be able to. Im using Gorilla grow tent 2x4, I know its not the same as the Mylar GLS uses for testing, but should be in the ballpark.
At 17", the best I'm pulling is just over 800ppfd which isnt near enough to run thru flower to harvest. At 20" distance it wasnt even close. I ended up putting my Quantum Board lamp in for the weeks 3-8 of flower.
After this grow is done and tent is empty, I will fully test the ProGrow 320 and be doubly sure of my findings. GLS advised me to hang the lamp 6-12" above the canopy. That doesnt seem right, and would kill my light spread, I would think. Im testing ppfd with Uni-T and PPFD app, so things are "Fairly Accurate".
They advised must have tent doors and window closed.. check.

As for lamp quality...
There were a few physical flaws noticed, fit and finish issues, and things that looked like tooling marks and parts that fit crooked or force-fit, but I overlooked that. Thinking the lamp was gonna be a burner, I never mentioned it.
Now that the lamp doesnt seem quite all that and a bag of chips, I wish I had brought those issues up. Too late now.

My HLG350R arrived new with no issues. My AC Infinity Bar lamp (EVO 4) arrived with no flaws or what looks like force-fit parts.

I will fully test in my tent after my other lamp finishes the flower and harvest . Only in Flower week 3 as of april '24.

I really want to LOVE this lamp, but my past harvest wasnt what it should have been.

If my 350Diablo was on duty, it would have produced more. Im sure of it. It did the prior grow. At $290 this isnt a cheap lamp, but there are newer EVO diode lamps for a few dollars more. After discount codes you can get them cheaper than this lamp.

I did only buy this as a back-up lamp, and for that its great. For my main 2x4 lamp, its not quite there (yet), but I'm not writing it off.. Just really need to check in-tent numbers with controlled environment.

Either way, if Im allowed to update this review, I will.

The way it is right now, Im saying 3 stars. If I find a way to keep ppfd high while getting a relatively even spread, then its a 4 star lamp. Its really not any cheaper than other bar lamps out there (take ACI for example), so it should match performance.
Plus, if you want to mount driver outside tent or away from lamp, its an additional cost. Other(s) include the cable, closing the price gap.

I did test this lamp with Par meter along with the HLG350R.
Testing confirmed what my informal measurments showed. This lamp is just not capable of high Ppfd at 18-20"

I call complete BS on their stated Ppfd and PAR map.

I will try another grow with this lamp, and mount it around 12" or less. Then maybe it will perform..

Im not bashing this lamp. Im just being real about its performance. Im using PPFD app along with Uni-T meter for measurements.

User picture User picture

Customer Reviews

Based on 1 review
0%
(0)
0%
(0)
100%
(1)
0%
(0)
0%
(0)
J
J.W.
ProGrow 320 Back up lamp

Bought the ProGrow 320 in Sept 23. Had this lamp for a full clone to flower grow and it performed decently.
Had it going in the same 2x4 tent for the past 6 weeks taking two plants from seed to flower. I noticed during my ProGrow 320 grow the "power" just didnt seem there.
Same thing in my current grow. Cant seem to hit 1000ppfd on my canopy at 20" or even 18". Per GLS specs, I should be able to. Im using Gorilla grow tent 2x4, I know its not the same as the Mylar GLS uses for testing, but should be in the ballpark.
At 17", the best I'm pulling is just over 800ppfd which isnt near enough to run thru flower to harvest. At 20" distance it wasnt even close. I ended up putting my Quantum Board lamp in for the weeks 3-8 of flower.
After this grow is done and tent is empty, I will fully test the ProGrow 320 and be doubly sure of my findings. GLS advised me to hang the lamp 6-12" above the canopy. That doesnt seem right, and would kill my light spread, I would think. Im testing ppfd with Uni-T and PPFD app, so things are "Fairly Accurate".
They advised must have tent doors and window closed.. check.

As for lamp quality...
There were a few physical flaws noticed, fit and finish issues, and things that looked like tooling marks and parts that fit crooked or force-fit, but I overlooked that. Thinking the lamp was gonna be a burner, I never mentioned it.
Now that the lamp doesnt seem quite all that and a bag of chips, I wish I had brought those issues up. Too late now.

My HLG350R arrived new with no issues. My AC Infinity Bar lamp (EVO 4) arrived with no flaws or what looks like force-fit parts.

I will fully test in my tent after my other lamp finishes the flower and harvest . Only in Flower week 3 as of april '24.

I really want to LOVE this lamp, but my past harvest wasnt what it should have been.

If my 350Diablo was on duty, it would have produced more. Im sure of it. It did the prior grow. At $290 this isnt a cheap lamp, but there are newer EVO diode lamps for a few dollars more. After discount codes you can get them cheaper than this lamp.

I did only buy this as a back-up lamp, and for that its great. For my main 2x4 lamp, its not quite there (yet), but I'm not writing it off.. Just really need to check in-tent numbers with controlled environment.

Either way, if Im allowed to update this review, I will.

The way it is right now, Im saying 3 stars. If I find a way to keep ppfd high while getting a relatively even spread, then its a 4 star lamp. Its really not any cheaper than other bar lamps out there (take ACI for example), so it should match performance.
Plus, if you want to mount driver outside tent or away from lamp, its an additional cost. Other(s) include the cable, closing the price gap.

I did test this lamp with Par meter along with the HLG350R.
Testing confirmed what my informal measurments showed. This lamp is just not capable of high Ppfd at 18-20"

I call complete BS on their stated Ppfd and PAR map.

I will try another grow with this lamp, and mount it around 12" or less. Then maybe it will perform..

Im not bashing this lamp. Im just being real about its performance. Im using PPFD app along with Uni-T meter for measurements.

User picture User picture