Skip to main content

(360) 800-5535 · Mon–Fri 9am–5pm PST

Login
0 Cart { % include 'bold-options-hybrid-cart-item-count' % }
Login
Mon-Fri 9am-5pm PST
(360) 800-5535 Email Us
Search
0 Cart
(360) 800-5535

Send Us a Message

Search

HLG 350 Diablo LED grow light, full spectrum quantum board, white frame.
White HLG 350 Diablo LED grow light with full-spectrum LEDs, suspended by wires.
HLG 350 Diablo quantum board LED grow light with full spectrum diodes and white frame.
Horticulture Lighting Group HLG 350 Diablo full-spectrum LED grow light with white frame and numerous LEDs.
HLG 350 Diablo LED grow light, full spectrum quantum board, white frame.
White HLG 350 Diablo LED grow light with full-spectrum LEDs, suspended by wires.
HLG 350 Diablo quantum board LED grow light with full spectrum diodes and white frame.
Horticulture Lighting Group HLG 350 Diablo full-spectrum LED grow light with white frame and numerous LEDs.

HLG 350 Diablo Full Spectrum LED Grow Light

5.0 (1 review)
Official Horticulture Lighting Group Dealer Model: HLG350D
Translation missing: en.product.price.range_html
starting from 0% interest financing from /mo.

Payment Options

Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
Looking to finance equipment under your corporation? Learn more about Business Financing
  • 950+ PPF output while drawing only 330 watts from the wall
  • Integrated reflectors and Diablo Quantum Boards for deep canopy penetration
  • 35-inch wide rectangular design fits 3' x 5' flowering footprints
  • 5-year manufacturer's warranty
  • View More Details
Order today, ships between May 28 - June 11, 2026
Let's Talk Pricing We work with our customers to find the best deal. Call or email us for personalized pricing on this product.
Email Enquiry

Request Special Pricing

Earn 549 points for shopping and get $5.49 off your next order. Join Harvest Club for free.
Free Shipping On Most Items* To the lower 48
Transparent Pricing Backed w/ price match guarantee
4.81/5 Rating 1930+ verified reviews
Secure Checkout SSL encrypted payments
Questions? Talk to a specialist.
(360) 800-5535 Live Chat

Send Us a Message

More in this Series

VOLUME PRICING

Commercial & Bulk Purchasing

We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.

Commercial Inquiry

Contact Information
THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are ditching your old 600W HPS setup because the heat output and energy bills make your room too hard to manage.
  • You are moving toward wide canopy layouts because your current square footprint leaves the corners of your bed hungry.

What We Found

  • The 3x5 footprint is a rare find that covers a standard rolling tray without wasting light on the aisles.
  • We noticed the integrated reflectors do a better job of directing light inward than the standard flat quantum boards.

What Users Say

  • Buyers who swapped out HPS rigs say they saw an immediate drop in tent temperatures and monthly power costs.
  • Users running perpetual cycles report that the passive cooling keeps the room manageable without noisy internal fans.

HLG 350 Diablo Full Spectrum LED Grow Light

Tired of the high heat and energy bills from your old 600-watt HPS lights? The HLG 350 Diablo is the ultimate upgrade, delivering superior performance with just 330 watts. It's a powerful replacement for a 600W HID, setting a new standard for modern LED grow lights.

Each HLG 350 Diablo is built with two advanced Diablo Quantum Boards® from Horticulture Lighting Group, featuring high-efficiency Samsung full-spectrum white and deep red LEDs. This combination produces a powerful, sun-like light that fuels vigorous growth from the moment you move plants out of the HLG Propagator 2.0 until harvest. With integrated reflectors, this fixture ensures deep canopy penetration, leading to higher-quality yields. To maximize resin and potency, consider adding an HLG 30 UVA Supplement Bar to your grow space.

Features

💡
Superior Efficiency

Replaces a 600W HPS light using only 330W, drastically cutting energy costs.

🌿
Full-Cycle Spectrum

Samsung white and deep red LEDs provide the perfect spectrum. For dedicated vegetative stages, the HLG 250 VEG Pro is a tailored alternative.

💥
High-Intensity Output

Delivers over 950 PPF for intense light that drives exceptional plant growth.

↔️
Even Canopy Coverage

A 35" wide design with integrated reflectors ensures uniform light distribution.

❄️
Passive Cooled Design

Silent, fanless operation provides reliability and reduces ambient heat.

🎛️
Fully Dimmable

Adjust intensity from 0 to 330 watts. For remote control, this unit is compatible with the HLG Growflux Access Point Controller.

🌍
Universal Voltage

Auto-sensing power supply works on 120V, 240V, and 277V circuits.

🛡️
5-Year Warranty

Backed by HLG's comprehensive warranty for complete peace of mind.

Spectrum Analysis

Horticulture Lighting Group HLG 350 Diablo Spectrum Analysis Chart

Specifications

Specification Value
Power 0-330W
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

The HLG 350 Diablo is covered by a 5-year manufacturer's warranty. This warranty does not cover user error or operator abuse.

FAQs

What is the main advantage of the HLG 350 Diablo over a traditional 600W HPS light?+

The HLG 350 Diablo offers three key advantages: superior energy efficiency (using almost 50% less power), a significant reduction in heat output (making climate control easier), and a full, optimized spectrum that promotes healthier plant growth and higher-quality yields compared to the limited spectrum of HPS bulbs.

What are the ideal coverage areas for this light?+

For flowering, the HLG 350 Diablo effectively covers a 3' x 5' area. For vegetative growth, it can cover a larger 5' x 5' footprint. The recommended mounting height is 15-24 inches above the plant canopy.

What makes HLG's Quantum Board technology special?+

Quantum Boards are large circuit boards with many small, highly efficient LEDs spread across them. This design allows for a more even light distribution, better heat dissipation (enabling the fanless design), and superior efficiency (PPF/W) compared to traditional COB or single-diode fixtures. To learn more about what makes this technology a game-changer, check out our guide on how HLG sets the bar for Quantum Board grow lights.

Is this light dimmable?+

Yes, the HLG 350 Diablo features a built-in dimmer that allows you to adjust the power output from 0 to 330 watts. This gives you precise control over light intensity, which is ideal for different growth stages from seedlings to late flower.

What other lights does HLG offer for different-sized spaces?+

The HLG 350 Diablo is perfect for its specified coverage area. For larger spaces, you might consider the more powerful HLG 750 Diablo for a significant boost in output, or the HLG 750 Diablo X for maximum performance in high-intensity applications.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

Why Trimleaf

Equipping home growers, craft producers, and commercial operations across North America since 2016.

10+
Years of Specialist Knowledge
4.8★
Over 1,900 Verified Reviews
50,000+
Growers Served
120+
Top Equipment Brands in Stock

You may also like