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HLG 300L RSpec

Our HLG300 V2 R Spec Commercial Indoor Horticulture LED grow light is designed to replace a single-ended 600watt HID. Each HLG-300 V2 uses 2 of our custom designed full-spectrum high efficiency white light quantum boards with Samsung LM301H and Deep Red LED 660nm . Learn more about the individual QB-288 boards here. This unit is dimmable, with wattage output from 90 to 270 watts.


Top Features

  • New improved longer design for more even Light coverage
  • High efficiency white light Quantum Boards
  • Full-spectrum White and 660nm Red
  • Reliable passive-cooled design
  • Better canopy light penetration with diffused light
  • Dimmable power supply included
  • Auto sensing power supply works on both 120VAC and 240VAC
  • 3 Year Warranty



Power 90-270 Watts
Voltage Range 90-277 VAC
Flowering Footprint 2.5' x 2.5' or 3' x 3'
Veg Footprint 4'X4'
System Efficiency 164 Lm/W
System PPF Efficacy 2.6 μmol/joule
Total output 700 PPF
Dimensions 26" x 10" x 3"
Recommended Mounting Height 18-24 inches




I have to say the light is great. The quality is like buying a corvette its built to last of the best everything. Loving the red! Once I raised my canopy temp like customer support advised they took off like rockets. Leaving giant buds.
Thanks for helping this old vet, customer support is very helpful.

Oh yes.

I LIKE THIS LIGHT. Lots of light filling my 2x4x5 tent. I mounted it to the top using strong zip ties, leaving about 4" space above for air to flow. I hung a 4" axial fan ( a really strong one) next to it that blows air directly over the unit. An inline booster fan is needed for extra air in with a setup like this, as temps will easily go over 80F inside when the tent is closed. The inline fan out can only do so much.(It does put out heat, but not anywhere unmanageable) The 3 year warranty really sealed the deal for me. Oh btw, the shipping was super fast too.

Canopy Filler !

Got some of these a few weeks ago to add between 550's and really fill in the canopy during the last half of the flower cycle... absolutely loving it !. Great build quality, solid construction and dimmer already hooked up and ready to use.. Great lightl.. highly recommended.