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HLG 350 Diablo full-spectrum LED grow light featuring Quantum Boards with many small LEDs arranged on a white panel.
Suspended white HLG 350 Diablo full-spectrum LED grow light with numerous visible LED panels.
White Horticulture Lighting Group (HLG) 350 Diablo full spectrum LED grow light panel with visible LEDs.
White Horticulture Lighting Group (HLG) 350 Diablo full-spectrum LED grow light with Quantum Boards.
HLG 350 Diablo full-spectrum LED grow light featuring Quantum Boards with many small LEDs arranged on a white panel.
Suspended white HLG 350 Diablo full-spectrum LED grow light with numerous visible LED panels.
White Horticulture Lighting Group (HLG) 350 Diablo full spectrum LED grow light panel with visible LEDs.
White Horticulture Lighting Group (HLG) 350 Diablo full-spectrum LED grow light with Quantum Boards.

HLG 350 Diablo Full Spectrum LED Grow Light

Reduced Price:
$1,399.00 CAD $1,199.00 CAD$1,399.00 CAD
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Pay as low as
$119900/Mo
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MODEL: HLG350R
Order today, ships between February 18 - March 4, 2026
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HLG 350 Diablo Full Spectrum LED Grow Light Overview

Full Spectrum

Type

3' x 5'

Coverage

60-330W

Power

3 Years

Warranty

HLG 350 Diablo Full Spectrum LED Grow Light

Struggling with the heat and high energy bills from your old 600W HID lights? The Horticulture Lighting Group 350 Diablo is the ultimate upgrade, delivering superior full-spectrum light with just 330 watts. This powerful fixture is one of the most efficient LED grow lights on the market, engineered to boost your yields without breaking the bank.

At its core are two custom-designed Diablo Quantum Boards®, packed with high-performance Samsung white and deep red LEDs. This advanced design, combined with integrated reflectors, pushes light deep into the canopy, nourishing lower branches for more consistent, high-quality results. Its rectangular shape is perfect for covering a 3' x 5' flowering area or a 5' x 5' vegetative space, making it a versatile choice for any indoor garden. If you need a light focused purely on vegetative growth, the HLG 250 VEG Pro is another excellent option. For growers needing to cover a larger area, the HLG 750 Diablo offers double the power.

Features

💡
High Efficiency

Replaces a 600W HPS/MH lamp while consuming only 330 watts, saving you money on electricity.

🌿
Advanced Diablo Boards

Features two custom Diablo Quantum Boards® with Samsung LEDs for an incredible 2.80 PPF/W efficacy.

📏
Optimized Footprint

Delivers even, edge-to-edge coverage for a 3'x5' flowering area or a 5'x5' vegetative space.

🎨
Full Spectrum Power

Combines full-spectrum white and 660nm deep red LEDs to fuel vigorous growth and dense flowering.

❄️
Passive Cooling

The fanless, passive-cooled design ensures silent operation and exceptional reliability with no moving parts.

✅
5-Year Warranty

Your investment is protected by an industry-leading 5-year warranty for complete peace of mind.

HLG 350 Diablo Spectrum Analysis

Horticulture Lighting Group HLG 350 Diablo Full Spectrum LED Grow Light Spectrum Analysis Chart

HLG 350 Diablo Specifications

Specification Value
Power 0-330W
AC Voltage Range 120-277 VAC 50-60Hz
LEDs Full Spectrum White & Deep Red
Flowering Footprint 3' x 5' @ 15"
Veg Footprint 5' x 5' @ 24"
System PPF Efficacy 2.80 µmol/joule
Total Output (PPF) 950+ PPF
Dimensions 35" x 9.5" x 3.25"
Weight 10 lbs
Mounting Height 15" - 24" above canopy
Certifications UL 8800, CSA, DLC

Support & Manuals

Warranty

HLG offers a 5-year warranty on the 350 Diablo, covering any manufacturing defects. Please note that the warranty does not cover user error or operator abuse.

FAQs

What is the actual power draw of the HLG 350 Diablo?+

The HLG 350 Diablo has a variable power output, drawing between 0 and 330 watts. It's designed to efficiently replace a traditional 600W HID lamp while consuming significantly less energy.

What are the ideal coverage areas for this light?+

For flowering, this light provides excellent coverage for a 3' x 5' area. For vegetative growth, it can effectively cover a larger 5' x 5' footprint.

Is this light dimmable?+

Yes, the HLG 350 Diablo features a dimmable driver, allowing you to adjust the light intensity from 0 to 330 watts to suit your plants' specific needs at every stage of growth.

What makes the Diablo Quantum Boards® special?+

The advanced Diablo Quantum Boards® use high-efficiency Samsung full-spectrum white and deep red LEDs. This technology, combined with integrated reflectors, ensures deep canopy penetration and a high PPF efficacy of 2.80 μmol/joule for healthier plants and bigger yields. You can learn more in our article about how HLG sets the bar for quantum board grow lights.

Can I use this light in a commercial setup?+

Absolutely. While it's great for smaller spaces, its high efficiency, reliable passive cooling, and auto-sensing power supply (120-277V) make it a solid choice for vegging in commercial grows or for smaller flowering rooms. For larger commercial setups, you might consider the HLG Scorpion Diablo.

How does this model compare to other HLG lights?+

The 350 Diablo is a fantastic mid-range light for its footprint. For smaller spaces, cloning, or supplemental lighting, the HLG 100 V2 is a great option. For maximum power and coverage in a bar-style fixture, consider the HLG Scorpion Diablo X. Each light in the Horticulture Lighting Group lineup is designed for a specific purpose.

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