Comparing HLG 600 Rspec vs HLG 550 Rspec

by Horticulture Lighting Group

HLG 600 Rspec features a slightly bigger heatsink and a 600W driver to give you 18% more output compared to HLG 550 Rspec.

Same Rspec spectrum. 18% More intensity for bigger coverage and bigger yields.

All the performance gain for the same $849 retail price.

HLG 600



HLG 600 Rspec

HLG 550 Rspec

Product spec sheet: coming soon  Product spec sheet: HLG 550 V2
 2.55 PPF/W Efficiency 2.65 PPF/W Efficiency
1522 PPF Output 1293 PPF Output
600 Watts 500 Watts
Samsung LM301H & LH351 Deep Red 660nm Samsung LM301H & LH351 Deep Red 660nm
10% more output compared to 1000W Single Ended HPS Replaces a 1000W Single Ended HPS
Powered by Quantum Board® QB 288 Rspec Powered by Quantum Board® QB 288 Rspec
29" x 22" x 4" 29" x 20" x 4"
5' x 5' Flowering at 28-32 inches 5' x 4' Flowering at 24 - 30 inches
6' x 6' Veg 6' x 6' Veg
60 to 600 Watts Dimmable 50 to 500 Watts Dimmable
90-277 VAC 90-277 VAC
2050 BTU 1700 BTU


HLG 600 and HLG 550 PPFD Chart in open 5x5 space. Expect higher intensity specially on outer area when used in a grow tent or a commercial grow with light crossing over from multiple lamps.

Mounting height 24inches. HLG 600 (left) HLG 550 (right)

HLG 600 vs 550

HLG 600
3150K - 3250K CCT
90 CRI
3.62 Red/Blue


Horticulture Lighting Group
Horticulture Lighting Group


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