Comparing HLG 550 V2 Rspec and HLG 550 V2 Full Spectrum

by Horticulture Lighting Group 5 Comments

Hello to our LED gardening friends!  Glad you could join us for a little comparison talk on two of the most popular high intensity grow lights in the LED gardening market.  At less than 500W at the wall, which is best for your garden?  Hopefully we can set you straight in this article.

We'll take a look at the differences between the HLG 550 V2 R-Spec and the HLG 550 V2 Full Spectrum and how these ultra high efficient indoor gardening high intensity grow lights stack up for your garden. 

Below we've laid out a few new features in the V2 and where the R-Spec, deep red spectrum could be a benefit to your garden vs an HLG 550 V2 Full Spectrum.

Take in mind the environment you're growing, where you are located, the relative humidity etc., and whether you are using a completely sealed grow space.  And most of all, what are your greenthumb goals as a gardener?  Would a DIY setup better serve your grow knowledge? Or skip it and go straight with the turnkey HLG LED grow lights such as the HLG 550 V2 R Spec.

Let's take a look at the difference between these two ultra efficiency and high performance light engine models:



  • Proven Design with over 15000 units sold
  • Highest efficiency per watt per dollar gives the most light for your money and low power consumption
  • Reliable Passive Cooled Design with minimum point of Failures
  • Full Spectrum for optimal plant growth

Conforms to UL Std 1598
Certified to CSA Std C22.2#250.0


Lab Reports

HLG 550 V2 R spec Report

HLG 550 V2 Report



HLG 550 V2 R spec offers more light output with a red enhanced spectrum.

More output and better spectrum with similar power consumption gives you unbeatable performance and price.

HLG 550 V2 R Spec is ideal for flowering and full cycle. HLG 550 V2 4000K is ideal for Veg cycles.


 550 V2 Rspec vs V2

Comparison at 240VAC between 550V2 3000K and 550V2 R spec



Spectrum Comparison

R spec Full Spectrum ( 3500K White + 660nm )


V2 Full Spectrum ( 3000K White )


V2 Full Spectrum ( 4000K White for veg)


LED Comparison

HLG 550 V2 uses 1152 pcs of Samsung LM301H LED. Available in 3000K and 4000K

HLG 550 V2 uses 1088 pcs of Samsung LM301H LED in 3500K and 64 Osram SSL Deep Red 660nm

Now maybe you know what you're reading and maybe that was a bunch of mumbo jumbo-- so we'll make it simple:


Just do it like Nike.

Currently, as we update this blog post, as technology improves, drivers and diodes improve and HLG's R&D team has been able to take the HLG 550 V2 R-Spec and surpass efficiency of the HLG 550 V2 Full Spectrum and the output.

The HLG R-Spec is recommended for both flowering and full cycle gardens at this time (January 2020).

Awesome!  Take me over to the HLG 550 V2 product page.

Horticulture Lighting Group
Horticulture Lighting Group


5 Responses


September 10, 2019

I have a temp meter at the top of my HLG 550 V2 Rspec and its reaching 90 degrees in a 4×4 tent on full power is this normal or did I wire things wrong?

Ron Smith
Ron Smith

August 08, 2019

What the difference in 550 & 288…also what does 550 mean???

Andy hunter
Andy hunter

July 11, 2019

My countrys electricity supply is 220 v 50 hz can i still use your hlg 550 system

Mike Garcia
Mike Garcia

June 09, 2019

Is the Rspec available still? Please send link.

Zachary Rahuba
Zachary Rahuba

June 04, 2019

What cri you guys use for the lm301b?

Leave a comment

Comments will be approved before showing up.

Also in BLOG

Comparing HLG 600 Rspec vs HLG 550 Rspec

by Horticulture Lighting Group

Read More

Comparing HLG 550 R spec vs HLG 650R

by Horticulture Lighting Group

Read More

HLG 550 R spec B spec and ECO Comparison

by Horticulture Lighting Group

Growers House Compares HLG 550 and HLG 550 ECO with other lamps

Read More