Availability in USA:  In stock, ships in 1-2 days.


Warranty: 3 years.


Bulk/commercial pricing available for this product: inquire for a volume quote.

Satisfaction guaranteed.

Free continental USA delivery over 99$.

Discreet shipping.

Guaranteed safe checkout.

Satisfaction guaranteed.

Free  continental USA shipping over 99$.

Discreet shipping.

Guaranteed safe checkout.

Satisfaction guaranteed.

Free continental USA shipping over 99$.

Discreet shipping.

Guaranteed safe checkout.

About Horticulture Lighting Group HLG-550 v2 RSPEC Quantum Board LED Grow Light

Package includes: Horticulture Lighting Group HLG 550 v2 RSPEC Quantum Board LED Grow Light

At 2.6 umol/j, the HLG 550 V2 R-Spec is the most efficient single-ended 1000-watt HID replacement on the market!

The Horticulture Lighting Group HLG 550 V2 R-Spec LED light will replace a single-ended 1000W HID while only drawing 480 watts at the wall and exuding the light output of 1,257 umol/s!

Each HLG 550 V2 R-Spec lamp uses 4 custom-designed high-efficiency white light quantum boards with a total of:

  • 1088 Top-Bin Samsung LM301B LED arrays
  • 64 Top-Bin Osram 660nm Deep Red LED arrays

ETL/CSA certified for commercial grows

Contact for volume discounts and pricing here


Top Features

  • High-efficiency custom-designed white light quantum boards with Samsung LM301B and Osram 660nm Deep Red
  • Enhanced 3500K white-light full spectrum for optimal canopy penetration and easy viewing
  • Ideal for seedling to harvest growth 
  • Reliable passive-cooled design (no cooling fans required)
  • Optimal canopy penetration with diffused light via a large form factor
  • Dimmable high-efficiency Mean Well driver (200-480W range)
  • Designed and manufactured in the USA
  • Auto-sensing power supply (90-277v AC)

    Spec sheet




    PAR Chart

    HLG 550 V1 chart


    More info


    HLG 550 Rspec, BSpec and Eco comparison

    HLG 550 comparison


    HLG 550 V2 vs HLG-600H comparison

    We have received many questions about the difference between the HLG 550 V2 R-Spec and the HLG-600H. The main differences are listed below.

    HLG 550 V2 R-Spec

    • 480W power draw
    • Covers a 4x4 area (1000W SE HID replacement)
    • 1257 umol/s light output (16% less light than the HLG 600H)
    • Preassembled
    • 3-year warranty


    • ~620W power draw
    • Covers up to a 5'x5' area (~1000W DE HID replacement)
    • 1500 umol/s light output (16% more than the HLG 550 V2)
    • Comes disassembled and requires assembly before use (about 25 minutes to put together). Screwdriver and wire snippers (or scissors) are required to assemble and are not included.
    • 1-year warranty





      Model/SKU: HGL 550-R/hgl550-R

      Wattage draw: 200-480 watts (dimmable on driver)

      HID equivalent: 1000 watt single-ended HID fixture


      • 1088 x Top-Bin Samsung LM301B (3500K)
      • 64 x Top-Bin Osram 660nm Deep Red

        PPF: 1257 umol/s

        PAR efficacy: 2.6 umol/j

        Coverage area:

        • Veg: 6' x 6'
        • Flower: 4.5' x 4.5' or 5' x 5'

        Mounting height: 

        • Flower: 24"
        • Veg: 36"

        Thermal management: Passive cooling

        Weight: 18 lbs (~8 kg)

        Dimensions: 26” x 20” x 3”

        Outer packaging: 29" x 24" x 6"

        Operating/input voltage: 90-277VAC; 50Hz-60Hz

        Amperage: ~4.23A @ 120V; ~2.16A @ 240V

        BTUs: 1705

        Finish: Clear anodized aluminum

        Certifications: ETL and CSA certified (for 120v/240v)

        Product includes:

        • Fixture with 120V or 240V US cord and plug (UK, AU, or EU cord and plug available on request)
        • Dimmable Mean Well driver (dimmable to 50% intensity)
        • Rope ratchet hangers

        Recommended for:

        • Grow tents
        • Grow rooms
        • Large indoor grows
        • Vegetative growth and/or flowering
        • Full-cycle growing from seedling to flower
        • Soil, hydroponic, aeroponic, or aquaponic systems

        Manufacturer's warranty: 3-years

        • REVIEWS
        • WHY BUY FROM US

        Discreet Shipping - We understand the importance of privacy to many of our customers. All orders placed on Growbuds are shipped in plain boxes without explicit identifying marks.

        Free, Fast Shipping All continental US orders over $99 qualify for free shipping. 

        Estimated Arrival - Between 1 and 5 business days, depending on your location.

        Easy Returns for up to 90 days, depending on the brand.

        Please refer to our Shipping & Returns policy page for more detailed information.

        You may be wondering why you should buy your grow lights from us, instead of other available authorized dealers. Read on for the answers to all your burning questions. 

        10 Reasons To Trust Growbuds With Your Business

        1. Customer Service. We are here to help and want the best for you. Use our live chat, email us at support@wegrowbuds.co or call us at 1-877-900-2632 during business hours. We are always here for you.

        2. Full Warranties and Generous Return Policies. We only carry top American brands that back their products with full warranties and return policies of up to 90 days, depending on the brand.

        3. Earn Growbuds Points on all your purchase and save big on your next purchases. You'll earn 4 "Nugs" for every dollar your spend. You can then use your "Nugs" to save on your next grow room upgrades. Get started by creating a free account today.

        4. Price Match. We want you to be absolutely secure that you're getting the best price with us, so we will not only match a lower price you find online before purchase, but will even refund you the difference up to a month after purchase.

        5. Discreet Insured Shipping. All orders ship via FedEx, UPS, and USPS, or a reputable freight company and the shipment is always insured, so you do not have to worry about a lost or damaged package. You also don't need to worry about prying eyes: all orders ship discreetly.

        6. Hassle-Free Returns. For up to 90 days, please refer to our Shipping & Returns policy page for more information.

        7. Free Shipping on orders over $99 to the lower 48 states.

        8. No Sales Tax Anywhere, except for MI, and CA for some brands.

        9. Authorized Dealers. We only carry American brands whose lights and other products have been extensively tested by real growers and processors. 100% US warranty on all products.

        10. Safe & Secure Systems in place for every payment transaction.

        Horticulture Lighting Group fixtures come with a 3 year manufacturer's warranty.

        Our experienced commercial team has helped supply hundreds of indoor, outdoor and commercial greenhouses projects in Canada and the United States. Get started here. 

        Online Payments and Security

        Your payment information is processed securely. We do not store credit card details nor have access to your credit card information. The transaction will display as GB INC. on your card statement.

        Growbuds® Club

        Get the rewards you deserve. With the Growbuds Club, you'll earn 4 "Nugs" for every dollar your spend. You can then use your "Nugs" to save on your next grow room upgrades. Get started by creating a free account today.

        Buy Now, Pay Later

        Buy your favorite products today, and split up the cost into four interest-free payments. No interest fees. No impact to your credit score. It’s seriously that simple. Simply choose Sezzle at checkout.

        Growbuds® Wholesale

        Our experienced commercial team has helped designed, consult and supply hundreds of indoor, outdoor and commercial greenhouses projects in Canada and the United States. Contact sales now at 1-877-900-2632 option 2 to contact a sales representative or click the button below to submit a request via email.

        Frequently Asked Questions

        Where is Growbuds located? Where do you ship from?

        Our main warehouse is located in Las Vegas, Nevada. However, we do have a network of smaller warehouses located in Michigan and Pennsylvania to make our order fulfillment process way more effective, so you can receive your order faster! 

         If you have further questions concerning our shipping policy, you can contact us at 1-877-900-2632 (Monday - Friday, 9AM - 5PM EST) or via email at support@wegrowbuds.co and it will be our pleasure to assist you.

        How much does shipping costs? Are you offering a free shipping policy?

        All orders over $99 qualify for free shipping. Orders below 99$ will be charged a fee depending on your shipping address and the carrier that you choose at checkout.

        With which carrier will my package ship?

        We ship most orders via USPS, Purolator, UPS and FedEx. 

        How long can I expect my order to arrive?

        While most products are located at our main shipping station and can be ready to ship within a few hours, some products require additional handling time so there may be up to 3 business days of handling time before your order is ready to ship.If your order is taking longer than 3 business days to ship out please contact us at support@wegrowbuds.ca to have an accurate update.

        Standard  Shipping:  Once they ship out packages normally arrive within 1 to 5 business days depending on your location in the continental USA. 

        Our shipping cutoff time is 11AM Eastern Time. So, any order placed after 11AM will ship out the following business day and therefore the day you place your order would not count towards the shipping times above. If you place your order on a weekend or a holiday, please consider the following business day as your first day when factoring in shipping times.

        What is your return policy?

        If ever I wanted to return my order, would I need to pay for the return shipping?

        No, Growbuds Returns Department will provide you with a prepaid return shipping label, so you don't have to pay for returning your order back to our warehouse.  

        Do your products come with any warranties?

        All products sold on Growbuds are subject to the respective manufacturer’s warranty policy, which normally lasts one year. These policies can be found on the original manufacturer’s website or by contacting them. The manufacturer will replace any defective parts within the warranty period. Damages caused by misuse, improper maintenance or neglect are not covered by the manufactures warranty.

        Growbuds will assist you in your warranty claim by helping you coordinate with the original manufacturer. If for any reason, your product is defective, please contact us directly at 1-877-900-2632 or via email at support@wegrowbuds.co to request a Return Merchandise Authorization number (RMA). Should you have any questions or concerns about our warranty policy, please contact us.

        What payment methods are you accepting at checkout?

        We accept payment via credit cards (Visa and Mastercard), Sezzle (4 interest-free payments), and bank wire. 

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