Horticulture Lighting Group HLG 600 RSpec Full-Spectrum 600W Quantum Board LED Grow Light (Full Cycle / Flower)


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sThe Horticulture Lighting Group HLG 600 RSpec LED light will replace a 1000W HID while only drawing 600 watts at the wall and exuding the light output of 1,529 umol/s!

Each HLG 600 RSpec lamp uses 4 custom-designed high-efficiency white light quantum boards with a total of:

  • 1088 Top-Bin Samsung LM301H white LED arrays
  • 64 Top-Bin LH351 660nm Deep Red LED arrays

How does this light differ from the HLG 550 Rspec? The HLG 600 Rspec features a slightly larger heatsink and a 600W driver to give you 18% more output for more coverage and bigger yields, compared to the HLG 550 Rspec. All the performance gain for the same $849 retail price.

ETL/CSA certified for commercial grows


Top Features

  • High-efficiency custom-designed white light quantum boards with Samsung LM301H white and LH351 660nm Deep Red
  • Enhanced white-light full spectrum for optimal canopy penetration and easy viewing
  • Ideal for seedling to harvest growth
  • Reliable passive-cooled design (no cooling fans required)
  • Optimal canopy penetration with diffused light via a large form factor
  • Dimmable high-efficiency Inventronics driver (120-600W range)
  • Designed and manufactured in the USA



PAR Chart

24″ from canopy

GrowFlux Controller Information


More information




Model/SKU: HGL 600R/hlg600R

Wattage draw: 120-600 watts (dimmable down to 20%)

Wattage steps on dimmer:

  1. 0 W
  2. 135 W
  3. 235 W
  4. 325 W
  5. 415 W
  6. 490 W
  7. 550 W
  8. 595 W
  9. 600 W
  10. 605 W

HID equivalent: 1000 watt HID fixture


  • 1088 x Top-Bin Samsung LM301H (3000K + 5000K)
  • 64 x Top-Bin Osram 660nm Deep Red

PPF: 1,529 umol/s

PAR efficacy: 2.6 umol/j

Coverage area:

  • Veg: 6′ x 6′
  • Flower: 4′ x 4′ to 5′ x 5′

Mounting height:

  • Flower: 28-32″
  • Veg: 36-40″
Pro notes: 
Clones/seedlings: 36-48″ above the canopy at 20% intensity
Veg: Once the plants are starting to mature, say 3-4 nodes, then increase the intensity to 30-50%, but keep the height the same.
Flower (or late veg): 60-100% and adjust the height accordingly.

Thermal management: Passive cooling

Weight: 20 lbs (~8 kg)

Dimensions: 26” x 21.5” x 2.75”

Operating/input voltage: 90-277VAC; 50Hz-60Hz

Amperage: 5.0A @ 120V; 2.5A @ 240V

BTUs: 2050

Finish: Anodized aluminum

Certifications: ETL and CSA certified, UL 8800, UL 1598

Product includes:

  • Fixture with 120V or 240V US plug
  • Dimmable Inventronics driver
  • Wire hangers
  • Rope ratchet hangers

Recommended for:

  • Grow tents
  • Grow rooms
  • Large indoor grows
  • Vegetative growth and/or flowering
  • Full-cycle growing from seedling to flower
  • Soil, hydroponic, aeroponic, or aquaponic systems

Manufacturer’s warranty: 3-years


As featured in ‘Top 13 Best LED Grow Lights 2021’


HLG 550 V2 Rspec Review (for Reference)


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