Lumatek 50W Far Red LED Grow Light - Canopy-Penetrating Supplemental Bar
Best for: growers with a full-spectrum LED fixture already running who want to add targeted far-red light for better canopy penetration and flowering response.
Our thoughts
This is a supplemental bar, not a standalone grow light, so don't expect it to run your tent on its own. What it's actually good at is pushing far-red wavelengths deeper into a dense canopy than your main fixture manages alone, which is the whole point of buying one.
The Lumatek 50W Far Red LED Grow Light is a dedicated supplemental bar designed to be run alongside a full-spectrum fixture such as Lumatek's Zeus range, adding wavelengths concentrated around the far-red band rather than broad-spectrum light. It draws 50W and delivers an effective PPF (400-750nm) of around 155 µmol/s, with output peaking near 730nm, the wavelength most associated with far-red plant responses and improved light distribution deeper into dense growth.
It's built with an IP65-rated waterproof housing, a rated lifespan over 45,000 hours, and a 140° beam angle for spread rather than a tight spot. A built-in dimmer lets you control output independently of your main fixture, and it can be daisy-chained with other Lumatek LED units (up to 18 in a chain) for larger rooms running multiple bars off one control point.
How it compares
Far-red supplementation can be added a few different ways.
- Old-school incandescent far-red bulbs put out the right general wavelength range but with none of the efficiency, control or waterproofing of a purpose-built LED bar.
- Running a full-spectrum fixture alone without any far-red add-on skips this tool entirely, some growers get good results without it, but you lose the option to boost canopy penetration independently.
- Generic far-red LED strips exist at lower cost but typically lack daisy-chain compatibility and IP65 waterproofing, which matters in a humid flowering room.
For growers who want a controllable, efficient, purpose-built far-red source rather than an improvised one, this fills that specific gap.
Usage guidance
This is a supplemental light, so positioning relative to your main fixture matters more than with a standalone grow light.
Positioning
Mount alongside your main full-spectrum fixture, angled to reach into the canopy rather than just adding more light at the top.
Dimming
Use the built-in dimmer to control far-red intensity independently rather than running it flat-out throughout the whole light cycle.
Multiple units
Daisy-chain up to 18 units together for larger rooms, controlling them from a single point rather than wiring each bar separately.
Photoperiod
Some growers run supplemental far-red for the full light period, others concentrate it toward the end of the daily cycle to lean into the plant's shade-avoidance response; either way, dial it in gradually rather than maxing it out from day one.
Technical specifications
- Input power: 50W (+/-5%) @230V AC
- Efficacy: 3.1 µmol/J
- Effective PPF (400-750nm): Approx. 155 µmol/s
- Peak wavelength: Approx. 730nm (far-red)
- Beam angle: 140°
- Waterproof rating: IP65
- Rated lifespan: 45,000+ hours
- Control: Built-in dimmer, daisy-chainable up to 18 units
Who this is for
- Growers with an existing full-spectrum LED fixture wanting to boost canopy penetration
- Anyone running a dense, multi-layer canopy where light struggles to reach lower growth
- Multi-fixture rooms wanting daisy-chained control of several supplemental bars
- Growers experimenting with far-red timing to influence flowering response
Our take
Bought for the right reason, as a supplement rather than a replacement for your main light, this does a specific job well: getting far-red wavelengths further into the canopy than your main fixture manages on its own, with proper waterproofing and daisy-chain control.
Proper kit at a price that makes sense for growers ready to fine-tune their flowering setup rather than just running a single fixture.
