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HLG 350 Diablo Grow Light

$550.00
Shipping calculated at checkout.

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BuildASoil is committed to sourcing the highest quality ingredients you can trust. over 10,000 Five Star Reviews and over a decade in business

Delivery and Shipping

 

BuildASoil Shipping Policy

At BuildASoil, we’re committed to providing the most affordable and reliable shipping possible—for both our customers and our business. We continuously evaluate and improve our fulfillment process to ensure faster, smoother deliveries. We know shipping is often a pain point in shopping online, and our goal is to make it feel painless. For full details, please read the complete policy below.

Notice: Each product page displays accurate estimated delivery windows based on real-time fulfillment and carrier schedules.


📦 Shipping Options 
  • BuildASoil Shipping: Our complimentary shipping method for qualifying orders. We choose the most cost-effective carrier and shipping method. Delivery may take up to 10 business days. Most items qualify when you purchase two or more eligible products. Some qualify individually.
  • Standard Shipping:  A paid option where we ship using standard ground services.   
     
  • Standard Shipping: Rushed Out the Door! Includes everything in Standard Shipping, but adds on same day order processing (not guaranteed).
  • Get It Fast: Our expedited service. Orders are shipped with 2-3 day transit times and are prioritized for fulfillment, with most leaving the same business day (not guaranteed).
  • Overnight It: Ships via overnight service with immediate fulfillment for urgent deliveries.
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Option Cost Transit Speed Fulfillment Speed Notes
BuildASoil Shipping Free Up to 10 business days Standard Free on any eligible items; ships at our discretion
Standard Shipping Paid 3-7 business Days Standard Standard handling and transit
Standard Shipping: Rushed Out the Door! Paid (slightly more) 3-7 business Days Same Day Fast handling out the door with standard transit
Get It Fast Higher 2–3 business days Same Day Fast handling and transit
Overnight It Highest 1 business day ASAP Fastest possible option
Pickup at Factory Store Free N/A Ready In 24hrs Local pickup option
FedEx Freight Economy Varies by order 2–9 business days (varies) Varies For large or heavy orders
FedEx Freight Priority Varies by order 2–7 business days (faster) Varies For large or heavy orders

🚚 Carriers Used

We ship with FedEx, UPS, and USPS. Carrier preference is not guaranteed unless explicitly communicated to us. 


📮 PO Boxes 

Orders shipped to PO Boxes often require additional costs and are not eligible for free shipping. Use a physical address to avoid delays and fees.


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We ship to Alaska, Hawaii, Puerto Rico, Guam, Northern Mariana Islands and the U.S. Virgin Islands. Free shipping generally does not apply to large or bulky items shipped to these locations. Hawaii and Alaska do have more flexibility with this due to carrier policies. Quotes will be calculated at checkout or by request.


🇨🇦 Canada Orders

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🏭 Vendor-Fulfilled Items

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Important: Inspect all freight shipments before signing. Count and examine all packages. Signing the delivery receipt confirms that the order arrived in full and undamaged.


🚛 Full Truckloads

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  • Contact support@buildasoil.com in advance for FTL quotes.

🔍 Order Tracking

Tracking information is emailed upon shipment. If not received, visit buildasoil.aftership.com and enter your order details. For help, contact support@buildasoil.com.


🛡️ Shipping Protection

This low-cost optional add-on at checkout insures your shipment against loss, theft, and damage. Claims are fast-tracked for resolution or replacement.

Even with protection, we encourage submitting photos, videos, and documentation to assist our carrier claims process.


📋 Claims Policy

All claims must be submitted via support@buildasoil.com. Phone-based claims are not accepted.

Required Documentation:

  • Issue description
  • Photos/videos of damage, missing or incorrect items
  • Images of packaging and labels

Do not discard packaging or damaged items—carriers may require inspection.

Claim Deadlines

  • Damage / Missing Items: Within 5 business days of delivery
  • Incorrect Products: Within 30 days of delivery
  • Lost or Misdelivered Packages: Within 30 days of shipment

⚠️ Responsibility Disclaimer

Once an order leaves our facility, we are not liable for delays, damage, or misdelivery caused by the carrier. We assist with claims but final decisions rest with the carrier.

We have zero tolerance for mistreatment of delivery drivers. Verified misconduct may result in cancellation and refund of your order minus shipping costs.

Description

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. 🗽🦅USA Flag  

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.

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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.

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