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Grow Light Science Grow 300  - LED Grow Lights Depot
Grow Light Science Grow 300  - LED Grow Lights Depot
Grow Light Science Grow 300  - LED Grow Lights Depot
Grow Light Science Grow 300  - LED Grow Lights Depot

Grow Light Science Grow 300

$349.00 $419.00
  • Availability: In stock.
    • Free shipping in the USA (lower 48 states)
    • Ships discreetly
    • Ships in 1-3 business days

    The GROW 300 is a full-cycle lighting solution for commercial or residential cultivation. The 300's form factor allows for scalability and multiple grow room and grow tent configurations (see below). The light output (PPF), spectral distribution, and efficacy will deliver amazing results with a modest impact on your wallet. Try risk-free for 120 days.


    • Top-Bin white LEDs with OSRAM Hyper Red 660nm Gen3 for high power bloom phase
    • 90 CRI
    • Dimmable
    • 5-Year Warranty
    • 120 Day Satisfaction Guarantee
    • Free Shipping To Lower 48 States


    Try risk-free for 120 days. If not satisfied, you may return product for full refund (freight excluded). Product must be in "like new" condition (no dents, scratches, etc.) and returned with all original packaging materials.





      1 x GLS 300s in a 2x4 area

      4' x 2' Reflective Wall Area

      With Dark Colored Floor

      Single GROW 300

      Mounting Height = 20"

      100% Power


      2 x GLS 300s in a 4x4 area

      4' x 4' Reflective Wall Area

      With Dark Colored Floor

      Array - Two GROW 300s

      Mounting Height = 24"

      100% Power


      1 x GLS 300s in a 2.5x5 area

      5' x 2.5' Reflective Walled Area With Dark Colored Floor

      Single GROW 300

      Mounting Height = 18"

      100% Power


      2 x GLS 300s in a 5x5 area

      5' x 5' Reflective Wall Area

      With Dark Colored Floor

      Array - Two GROW 300s

      Mounting Height = 18"

      100% Power






      Wattage draw: 321 Watts

      LEDs: Top-Bin white diodes, OSRAM Hyper Red 660nm red

      Beam angle: 120°

      CRI: 90 

      PAR Efficacy: 2.75 μmol/J

      PPF: 884 μmol/s

      Dimmable: Yes, 1-10v

        Coverage Area:

        • Vegetative footprint: 1 unit - up to 3 x 6’;  2 units - up to 6' x 6'

        • Flowering footprint: 1 unit - up to 2.5’ x 5’; 2 units - up to 5’ x 5’

        Hang Height:

        • Vegetative: 24” - 48”

        • Flowering: 18” - 24”

        Dimensions: 46.1L x 12.6W x 2.9H inches

        Driver: Mean Well ELG Series or WeledPower HHA Series (both have 5-year warranty and a 50,000+ hour lifetime)

        Weight: 14.2 lbs

        Voltage: AC120~270V

        Amperage: 1.7A @ 120V; 50Hz - 60Hz

        Includes rope ratchet hangers: Yes

        Certifications: UL 1598 Damp Location

        Manufacturer's Warranty: 5 years


        As featured in 'Top 13 Best LED Grow Lights 2021'

        Shipping / Cancellations / Returns

        Order Confirmation

        As soon as you place the order, an order confirmation will be emailed to you. This means we have received your order and payment. Payment is captured as soon as the order is placed. In rare cases, if the product is on backorder or unavailable, we will contact you and ask if you would like to wait for the product to become available, switch your product, or have your payment refunded. If the item is available for immediate shipment (1-3 business days) we will submit the order for processing and arrange shipment.

        Order Shipment

        Most products ship within 1 to 3 business days from the date of your order (unless indicated on the product page). Some items take a bit longer to ship since they are built to order (i.e., Timber Grow Lights, ChilLED Tech, Trimmers, etc). We will send you tracking information as soon as it is available. 

        U.S. Shipping

        We are based in Portland, Oregon with warehouses nationwide. We offer FREE shipping in the lower 48 states (sometimes to HI and AK, too) via FedEx, UPS, USPS or other major couriers (product/brand dependent). Expedited shipping is usually available for an extra cost. Contact us before your purchase if you prefer an expedited shipping method and we will get you a quote.

        After the order is processed, allow 2 to 7 business days for the product(s) to reach you if shipped to a U.S. address. We can ship to PO boxes in some cases. We recommend using a street/residential address instead.

        International Orders

        Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Most quotes can be obtained at checkout. If not, please email us to receive a shipping quote for lights shipped outside of the USA. You may also place an order on our online store for items that require a quote and we will notify you via email on the exact shipping costs. 

        Some items/brands can be shipped for free.

        Items shipped internationally from the USA may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not LED Grow Lights Depot.


        If you need to cancel your order, we recommend reaching out to us ASAP. We charge a 2.15% (credit card / ViaBill), 2.6% (PayPal), 6% (Sezzle) order cancellation fee once the order has been processed (before it has been shipped). We can accommodate most requests, but due to the different time zones and schedules that our warehouses ship from, the cancellation request may not reach the warehouse in time. Once the item has been arranged to ship or has shipped, the package will be treated like a 'return' and is subject to ship-back fees and restocking fees. All EZTrim orders are final and non-refundable or returnable.


        We offer return shipping in the USA if you are not 100% satisfied for any reason. Many brands have a 90-day return policy. See our full Return Policy for rules and guidance on returning an item after purchase and for brand-specific return dates. A 5-25% restocking fee (brand dependent) may apply for returns within the dates of the return policy. Reach out to us for exact return instructions and restocking fees for the item(s) that you purchased.

        If you have any questions or would like to check the availability of an item, you may email us here or call us at (888) 611-9305. Thank you for shopping with us.

        Shop All LED Grow Lights

        Happy grows!

        Erik H.


        Why shop at LED Grow Lights Depot? This is why....

        1) Thousands of Successfully Shipped Orders and Thrilled Customers

        We have been in business since 2014 and are a highly-trusted online retailer offering honest grow advice and top-of-the-line LED grow lights and other grow/harvest/extraction equipment. We have thousands of 5-STAR PRODUCT REVIEWS from satisfied customers.


        2) Small, Family-Run, Veteran-Owned Business

        Founder/Owner Erik H. overseas that every customer is 100% satisfied with their purchase. If something is wrong, we will make it right, guaranteed! Call, email, or message us anytime and we will get back to you in about 1 business day or less (typically with-in minutes or hours during normal business hours). We have your back!


        3) Free Discreet Shipping in the USA 

        We offer FREE shipping in the lower 48 states via FedEx, UPS, USPS, or other popular couriers. We can ship most other products to Hawaii and Alaska for free too.


        4) Reliable International Shipping Available

        Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote or contact us if a shipping quote is not available at checkout. 

        Items shipped internationally from the US may have VAT, duties, taxes, and/or local charges due at delivery. 


        5) No Sales Tax in Some States

        Forget shopping locally or on other popular retail websites that charge tax. You can save a lot of money when buying though us since we do not charge tax in some states.


        6) 100% Low Price Guarantee

        We strive to ensure that we offer the absolute best prices online. Rest assured that you are receiving the best online price when you shop with us.

        If you find a better price online before or after you order from us (for up to one month), we will match or beat the competitor's price.

        Although rare, we may refuse to offer a price match in which we incur a loss.


        7) Easy Interest-Free Financing

        Finance your purchase in minutes! See our available financing options below:

        Buy what you want today and pay for it over four installments, interest-freeLook for the Sezzle button at checkout. Get approved up to $2,500. LEARN MORE.

        No Payments + No Interest if paid in full in 6 months on purchases of $99 or more. Get approved in seconds! Select PayPal at checkout and pay with PayPal credit or APPLY HERE


        8) Route Package Protection

        Adding Route Package Protection to your order at checkout means that your order is protected against being lost, damaged, or stolen. In the unfortunate instance that you experience one of these inconveniences, you can report an issue with Route and they will work with you to make sure you get the resolution you prefer. LEARN MORE.


        9) We are Authorized Dealers offering a Manufacturer's Warranty

        You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.


        10) Safe, Secure, Discrete Transactions

        We accept major credit cards, PayPal, Google Pay, Apple Pay, Sezzle, debit transactions, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.


        11) Hassle-Free Returns

        And just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason. See our FULL RETURN POLICY for full details.

        Customer Reviews

        Based on 23 reviews
        Geron H.
        Runs nice and cool plants loving them

        Bought 2 of the 300 model for my 4x4 tent , they are running at less than half power they are cool to the touch and putting out even light coverage plants are loving the lights would highly recommend these as the most bang for the buck!!!!!

        Jeff S.
        Have not grown anything yet. Starting up in mid to late Feb.

        Nothing to review yet.

        LED tech is moving crazy fast!

        I really like this light its has a super even spread fits my 2x4 like a glove its powerful adjustable and has a great spectrum for flowering especially. It does get pretty warm and in veg this can really keep ur plants short and bushy unless u turn it down alot I wish the efficacy was a little better but this is a very good led and affordable so what more can you ask for.

        F a.
        Grow light science 300

        Very nice light, the only con, it does produce more heat than my other leds that have the removable heat sink. Ventilating with cool night temperature air, and air conditioning at times helps a little bit. But other than that, it's very bright and plants are loving it,

        Premium illumination for a 2'x4' flowering space

        I am finishing up a 2-plant legal grow under this light right now and will likely harvest within a week or two. My previous setup was an HLG 135w QB in a 2x2, which provided the highest quality flower I had ever seen in my life. I switched to the Grow 300 when I upgraded to the 2x4 AC Infinity tent, and am really glad that I did. The plants are hearty, fast growing, and are receiving TONS of light at 16" and 100% intensity; this is an absolutely premium setup for a small personal garden.

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