Best LED Grow Light Comparison & Review Test Using Laboratory Data

7 minute read · March 3, 2020

We're doing something no one has ever done before--well, sort of. Using light laboratory data we are reviewing the best LED grow lights for PPF, umol/Joule, efficiency, and output from some of the top brands making LED grow lights. We're trying to find the best LED grow lights currently available in the market. Each LED company who takes their craft seriously focuses on buying high quality components that will last a long time (read: not fail within 2 years) and have high efficiency/output ratings. To test for the best LED grow lights comprehensively, you really need to send them to a laboratory that will will run the light through a battery of instrumentation.

Lights included in this test--thus far (we're continually testing LED models):

  1. California Light Works GH Pro 340 LED Grow Light
  2. California Light Works Solar Storm 550 LED Grow Light
  3. Fluence SPYDR 2i LED Grow Light
  4. Fluence SPYDR 2p LED Grow Light
  5. Gavita Pro 1700e LED Grow Light
  6. HLG 550 V2 R-Spec LED Grow Light


This is not your normal 5' x 5' grid where you use a lumen meter. That can be somewhat helpful, but we're going to use testing done at UL and Light Laboratory Inc., which are independent 3rd party light laboratories that do not have an incentive to make one brand look better than another. These are the same laboratories that most LED manufacturers use to test when designing their lights.

Each test from these companies is not cheap. For all the testing that we're requesting, the bill can run up to about $1,500 per light. This was no cheap endeavor, but we wanted to create the most unbiased, comprehensive, and informative comparison review test on the web. Therefore we needed to be using the best equipment available to do our testing.

The other amazing thing about this test? It's never ending. That's right, we're going to continually test lights and add the information to this page along with the PDF of results directly from the testing lab. We'll also include information in easy to digest tables and graphs below, along with definitions of the terms so you won't need to be a optical scientist to understand what's going on.

There is no one size fits all when it comes to LEDs. We hope this testing helps you choose the best light for you. Also, if you're going to purchase a LED grow light soon, please consider buying from GrowersHouse.com. We put a lot of time and money into this testing to help our customers make informed purchasing decisions. Being a customer helps support our mission of educating fellow growers.

To make it easier on our customer's wallets, we're also offering a 5% coupon good for any of the lights featured in the testing below: GHLED5. Not combinable with other sales or discounts.

*If you're on a computer (not mobile) you can click on the purple column headings to sort the columns from highest to lowest or vice versa.

LED Fixture Wattage Efficiency (umol/Joule) [400-700nm] Total PPF (400-700nm) Luminous Efficacy (lm/W) Brand of LED chips
California Light Works GH PRO 340 332 2.61 890 94.4 Osram
HLG 550 V2 R-Spec 484 2.60 1257 169.3 Samsung LM301H
California Light Works Solar Storm 550 369 2.40 885 42.3 Osram
Gavita Pro 1700e LED 653 2.70 1764 176.3 Samsung, Osram
Fluence SPYDR 2p LED 643 2.39 1536 152.4 Osram
Fluence SPYDR 2i LED 626 2.67 1669 175.2 Osram

Fluence SPYDR 2i 

Fixture Dimensions: 42.8” L x 46.99” W x 4.3” H (108.7cm x 119.4cm x 10.9cm)

Coverage Area Veg: 6' x 6'

Coverage Area Flower: 4' x 4'

Better for Indoor or Greenhouse?: Indoor

Fluence SPYDR 2i LED Grid

Fluence SPYDR 2p

Fixture Dimensions: 42.8” L x 46.99” W x 4.3” H (108.7cm x 119.4cm x 10.9cm)

Coverage Area Veg: 6' x 6'

Coverage Area Flower: 4' x 4'

Better for Indoor or Greenhouse?: Indoor

Fluence SPYDR 2p Spectrum Fluence SPYDR 2p Grid

Gavita Pro 1700e 

Fixture Dimensions: 44.1" x 43.7" x 2.3"

Coverage Area Veg: 6' x 6'

Coverage Area Flower: 4' x 4'

Better for Indoor or Greenhouse?: Indoor

Gavita Pro 1700e Spectrum Gavita Pro 1700e Grid

HLG 550 V2 R-Spec

Fixture Dimensions: 26" x 20" x 3"

Coverage Area Veg: 6' x 5'

Coverage Area Flower: 4' x 4'

Better for Indoor or Greenhouse?: Indoor

HLG 550 v2 R-Spec Spectrum HLG 550 v2 R-Spec Grid

California Light Works Solar Storm 550

Fixture Dimensions: 20" x 9" x 4"

Coverage Area Veg: 5' x 4'

Coverage Area Flower: 4' x 3'

Better for Indoor or Greenhouse?: Indoor

California Light Works Solar Storm 550 Spectrum

California Light Works GH Pro 340

Fixture Dimensions: 34" x 3.2" x 3.2"

Coverage Area Veg: 6' x 4'

Coverage Area Flower: 5' x 4'

Coverage Area Supplemental: 8' x 5'

Better for Indoor or Greenhouse?: Greenhouse

California Light Works GH Pro 340 Spectrum

Associated Products

Responses

  • Oliver Starr
    Oliver Starr March 7, 2020

    You should consider testing the Fohse F1-v and A3-i. GPL is running them after committing results to Fluence and HPS DEs

    Reply
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