HLG 350 Diablo Grow Light is backordered and will ship as soon as it is back in stock.
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HLG Diablo 350 Full Spectrum White Plus Deep Red
Trusted by growers - Made in the USA
Perfect for a 2x4 Grow Tent or a 3x5 Area maximum. Many growers start with one light and eventually get more.
Why We chose to work with HLG?? because they have been a leader for home growers and provide some of the best quality lights in the industry. Not only that, they are all built right here in the USA. 🗽🦅
If you are shopping, realize that all LED's come from factories in China, but most are sent completely built via containers on a ship. HLG gets the parts and does quality control and builds them here in the USA which means that they can back up their warranty claims with speed and customer service that is second to none. We are stoked to work with HLG and proud to offer their lights to you.
You want dense flowers, even coverage, and lower power bills?
Meet the HLG 350 Diablo, a compact grow light that delivers the punch you'd expect from a 600 watt HID while sipping just 330 watts. Two Advanced Design Diablo Quantum Boards with full spectrum white and deep red LEDs drive outstanding quality, strong penetration, and beautiful results.
With a rectangular footprint and integrated reflectors, this fixture shines in smaller flowering spaces and in veg across commercial racks. The reflectors focus photons down into the canopy, which means higher quality yields even at the lower levels. At an impressive 2.80 PPF per watt and 950 plus total PPF, you get serious output with calm temperatures and a quiet, reliable, passively cooled design.
Controls and power
Smooth dimming from 0 to 330 watts, auto sensing Inventronics power supply for 120 volt, 240 volt, and 277 volt. Just Choose your power cord and it's plug and play.
Highlights you will notice
Even coverage from the 35 inch wide form factor, Diablo Quantum Boards for class leading efficacy, full spectrum white with 660 nanometer red for resin and color, better canopy penetration with naturally diffused light, built for years of service and backed by a 5 year warranty.
Specifications
| Power | 0 to 330 Watts |
| Voltage Range | 120–277 VAC, 50–60 Hz |
| LED Spectrum | Full Spectrum White & Deep Red |
| Flowering Footprint | 3' × 5' at 15" |
| Veg Footprint | 4' × 5' at 24" |
| System Efficacy | 2.80 μmol/J |
| Total Output | 950+ PPF |
| Dimensions | 35" × 9.5" × 3.25" |
| Weight | 10 lbs |
| Mounting Height | 15–24" above canopy |
| Certifications | UL 8800, UL 1598, CSA, DLC Listed (QPL) |
Documents
HLG 350 Diablo manual
Independent efficiency lab report on this light
Independent PPFD note
You can expect higher intensity and more even coverage in a reflective grow tent or when using multiple lamps with crossover. Results may vary by room design, height, and training style.
Compliance
Conforms to ANSI CAN UL 8800 and UL 1598. Certified to CSA C22.2 number 250.
Instructions for use
Unbox the fixture and inspect for transit damage, then mount securely so the boards face downward. Set initial height around 24 inches in veg and about 15 to 18 inches in flower, then adjust based on plant response.
Begin at a reduced dimming level to ensure smooth transition to the new light, increase power slowly over several days while watching leaf posture and temperature. Maintain moving air across the canopy and keep ambient VPD in range. Clean the fixture periodically with a dry cloth and keep drivers clear of dust for best longevity.
Follow our Environmental Guide for more precise numbers
Warranty and support
Covered by a 5 year manufacturer warranty. Our team is here to help with dialing in height, dimming, and layout for your room.
Questions?
We are here to help and our entire staff knows how to grow. Just reach out via chat, email or even phone. We are passionate about growing and want you to succeed.
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
If you've had the predecessor 350R, you'll love this light. The panel is lighter than the 350R and I prefer it. The driver seems to me to emit less intense heat than the "R", but I've not measured it. The dimmer has zero play. My plants love this light. More than strong enough from seedling to harvest in my 2 x 4.
I purchased this light from Amazon last year an I'm running it in a AC infinity 4x2 tent and it's amazing. You don't have to run it on 10 at all 6 is the max for me.
HLG Diablo 350 Full Spectrum White Plus Deep Red
Trusted by growers - Made in the USA
Perfect for a 2x4 Grow Tent or a 3x5 Area maximum. Many growers start with one light and eventually get more.
Why We chose to work with HLG?? because they have been a leader for home growers and provide some of the best quality lights in the industry. Not only that, they are all built right here in the USA. 🗽🦅
If you are shopping, realize that all LED's come from factories in China, but most are sent completely built via containers on a ship. HLG gets the parts and does quality control and builds them here in the USA which means that they can back up their warranty claims with speed and customer service that is second to none. We are stoked to work with HLG and proud to offer their lights to you.
You want dense flowers, even coverage, and lower power bills?
Meet the HLG 350 Diablo, a compact grow light that delivers the punch you'd expect from a 600 watt HID while sipping just 330 watts. Two Advanced Design Diablo Quantum Boards with full spectrum white and deep red LEDs drive outstanding quality, strong penetration, and beautiful results.
With a rectangular footprint and integrated reflectors, this fixture shines in smaller flowering spaces and in veg across commercial racks. The reflectors focus photons down into the canopy, which means higher quality yields even at the lower levels. At an impressive 2.80 PPF per watt and 950 plus total PPF, you get serious output with calm temperatures and a quiet, reliable, passively cooled design.
Controls and power
Smooth dimming from 0 to 330 watts, auto sensing Inventronics power supply for 120 volt, 240 volt, and 277 volt. Just Choose your power cord and it's plug and play.
Highlights you will notice
Even coverage from the 35 inch wide form factor, Diablo Quantum Boards for class leading efficacy, full spectrum white with 660 nanometer red for resin and color, better canopy penetration with naturally diffused light, built for years of service and backed by a 5 year warranty.
Specifications
| Power | 0 to 330 Watts |
| Voltage Range | 120–277 VAC, 50–60 Hz |
| LED Spectrum | Full Spectrum White & Deep Red |
| Flowering Footprint | 3' × 5' at 15" |
| Veg Footprint | 4' × 5' at 24" |
| System Efficacy | 2.80 μmol/J |
| Total Output | 950+ PPF |
| Dimensions | 35" × 9.5" × 3.25" |
| Weight | 10 lbs |
| Mounting Height | 15–24" above canopy |
| Certifications | UL 8800, UL 1598, CSA, DLC Listed (QPL) |
Documents
HLG 350 Diablo manual
Independent efficiency lab report on this light
Independent PPFD note
You can expect higher intensity and more even coverage in a reflective grow tent or when using multiple lamps with crossover. Results may vary by room design, height, and training style.
Compliance
Conforms to ANSI CAN UL 8800 and UL 1598. Certified to CSA C22.2 number 250.
Instructions for use
Unbox the fixture and inspect for transit damage, then mount securely so the boards face downward. Set initial height around 24 inches in veg and about 15 to 18 inches in flower, then adjust based on plant response.
Begin at a reduced dimming level to ensure smooth transition to the new light, increase power slowly over several days while watching leaf posture and temperature. Maintain moving air across the canopy and keep ambient VPD in range. Clean the fixture periodically with a dry cloth and keep drivers clear of dust for best longevity.
Follow our Environmental Guide for more precise numbers
Warranty and support
Covered by a 5 year manufacturer warranty. Our team is here to help with dialing in height, dimming, and layout for your room.
