HLG Tomahawk 650 Output, Bars and Build
This fixture draws up to 650W and spreads its diodes across 5 bars. Current listings rate it at 1,920 µmol/s and 2.94 µmol/J. Early units were rated at 1,859 µmol/s and 2.8 µmol/J. The diodes pair full-spectrum white with 660 nm deep red. Each bar sits in an integrated asymmetrical reflector, which one reviewer credited with about 10% more light on the canopy. The driver accepts 120–277V and can be mounted remotely to move heat out of the tent. The frame measures 40.75 x 40 x 2.5 in and weighs 20 lb. Cooling is passive, and the open bar layout lets air move straight through. Expect about 2,218 BTU/hr of heat at full power. It carries UL 8800, CSA and DLC listings with a 5-year warranty.
Controlling the Light Through GrowFlux Wireless
GrowFlux wireless replaces the dimmer knob with app control over a mesh network. From a phone you can dim the light, set schedules and tie output to a PAR sensor. The GrowFlux access point is sold separately, and one access point can run many HLG lights at once. That makes this version the better pick when several tents or rooms need to ramp together. HLG rates flower coverage at 5 x 5 ft, while one reviewer found it strongest in a 4 x 4 tent. Hang it between 8 and 24 inches above the tops, starting high and lowering as the canopy fills. Bring intensity up over the first weeks of flower and watch the upper colas for bleaching. LED puts less radiant heat on leaves than HPS, so many growers raise room temperature a few degrees. The spectrum has no UV or far-red channel, so add those separately if you want them. If you run a single tent and never plan to automate, the RJ manual-dimming version saves the cost of the access point.
Key Features
- Five bars, 650W: About 1,920 µmol/s at 2.94 µmol/J in current listings.
- Integrated asymmetrical reflectors: Push more light onto the canopy and reduce hot spots.
- GrowFlux wireless module: App dimming, schedules and PAR sensor control; access point sold separately.
- Remote-mountable driver: Moves driver heat outside the tent on 120–277V.
- Open, passive design: No fans, 20 lb frame, air flows through the bars.
- UL 8800, CSA, DLC: 5-year HLG warranty.
Technical Specifications
| Specification | Value |
|---|---|
| Model | Tomahawk 650, GrowFlux (HLG-TOMAHAWK-650-GFX) |
| Power | Up to 650W |
| PPF | About 1,920 µmol/s (early units 1,859) |
| Efficacy | About 2.94 µmol/J (early units 2.8) |
| Bars | 5, with integrated asymmetrical reflectors |
| Spectrum | Full-spectrum white + 660 nm deep red |
| Growth Phase | Full-cycle (veg and flower) |
| Flower Coverage | 5 x 5 ft |
| Mounting Height | 8–24 in above canopy |
| Input Voltage | 120–277V |
| Driver | Remote mountable |
| Dimming | GrowFlux wireless module (access point sold separately) |
| Dimensions | 40.75 x 40 x 2.5 in |
| Weight | 20 lb |
| Heat Output | About 2,218 BTU/hr |
| Cooling | Passive |
| Certifications | UL 8800, CSA, DLC |
| Warranty | 5 years |