If you’re looking for the Best LED Grow Lights (2019) and full spectrum grow lights for your grow room, let us help you choose one. We know it’s a big investment and researching all the different options can take forever, so we’ve done the research for you. We’ve painstakingly compared and hand-picked the best LED grow lights on the market to find the right ones for a whole range of different use cases. Whatever your growing needs or budget, you can find a light here to suit.

Below, you’ll find award winners, bestsellers, budget options, quantum boards, supplemental lights, lights for small spaces or large grow rooms, as well as the lights most favored by our readers—in other words, the lights other growers like you are already using to get results.

Best LED Grow Lights on the Market for Growing Cannabis

We’ve covered a lot of lights below. So if you’re short on time, check out our three Editor’s Choices:

Best LED Grow Light 2019

Advanced LED Diamond Series XML 350

Advanced LED Diamond Series XML 350

Diamond Series Advanced LED have really surpassed themselves

Best Budget LED (Under $100)

MarsHydro ECO 300W

MarsHydro ECO 300W

 It’s the successor to MarsHydro’s top-selling Mars 300W,

Most Efficient LED Grow Light

HLG 550 V2 Quantum Boards

HLG 550 V2 Quantum Boards

The HLG 550 V2 is the most efficient LED grow light to cover a 5’ x 5’ area

And now, here in full are our Top 11 LED Grow Light recommendations for 2019

Top 11 Best LED Grow Lights Comparison Table

Advanced LED Diamond Series XML350 - EDITOR'S CHOICE: Best LED Grow Light (2019)Equivalent Wattage
Coverage Area
4.5' x 4.5'


MarsHydro ECO 300WMarsHydro ECO 300W - EDITOR'S CHOICE: Best Budget LED Grow Light (Under $100)Equivalent Wattage
Coverage Area
2' x 2'


HLG 550 V2 Quantum Board LED Grow Light - Most Efficient LED Grow LightHLG 550 V2 Quantum Board - EDITOR'S CHOICE: Most Efficient LED Grow LightEquivalent Wattage
Coverage Area
6' x 6'


Optic 4 LED - Best COB LED Grow Light 2019Optic 4 - Best COB LED Grow LightEquivalent Wattage
Coverage Area
3' x 3'


BESTVA Reflector Series Elite-1200W – Best LED Grow Light Under $200BESTVA Reflector Series Elite-1200W - Best LED Grow Light Under $200Equivalent Wattage
Coverage Area
4' x 5.2'


MarsHydro Mars Pro II CREE 128 600W – Best LED Grow Light Under $500MarsHydro Mars Pro II CREE 128 600W - Best LED Grow Light Under $500Equivalent Wattage
Coverage Area
3.5' x 6.5'

Buy Here

Kind LED K5 XL1000 - Best Programmable LED Grow LightEquivalent Wattage
Coverage Area
5' x 5'


G8LED G8-600 Full Spectrum MEGA LED Grow Light - Best LED Grow Light for Veg StageEquivalent Wattage
Coverage Area
4' x 5'


VIPARSPECTRA VT300 Reflector-Series 300W (Dimmable) – Best LED Grow Light for a Small Grow Room (Up To 2.5′ x 2.5′)VIPARSPECTRA VT300 Reflector-Series 300W (Dimmable) - Best LED Grow Light for a Small Grow Room (Up To 2.5′ x 2.5′)Equivalent Wattage
Coverage Area
2.5' x 2.5'


Black Dog PhytoMAX-2 400 – Best Commercial Level LED Grow LightBlack Dog PhytoMAX-2 400 - Best Commercial Level LED Grow LightEquivalent Wattage
Coverage Area
5.25' x 5.25'


PlatinumLED Platinum Series P900 - Best 1000W HPS ReplacementEquivalent Wattage
Coverage Area
4' x 6'


Here are the Best LED Grow Lights for the Money: Our Editor’s Choices for 2019

In previous years, our overall Editor’s Choice went to PlatinumLED’s Platinum Series P900. We still love it, it’s a great light. But for 2019 we’re going with the Advanced LED Diamond Series XML 350 instead. For two reasons:

  1. The new Diamond Series is even better! No question. You still won’t go wrong with PlatinumLED’s P-Series lights, but with the Diamond Series Advanced LED have really surpassed themselves.
  2. We’ve noticed a majority of our readers favor relatively smaller lights (600W HID equivalents and below), so we’re following suit with our recommendations. However, don’t worry, most of the lights we’ve selected—including this one—are also available in larger models.

OK then. What’s so great about the Diamond Series XML 350?

This unit can comfortably cover a maximum grow space of 4.5′ x 4.5′, with core coverage of 4′ x 4′—or 16 to 20 plants. Which is more than enough for home growers in most U.S. states, for instance.

PAR when hung at 18″ is an exceptional 1395 and 987 at 24″ for a 4′ x 4′ space.

  • The sheer quality of the LEDs themselves: American-made 10W CREE XML single chip diodes (and Bridgelux blue and whites). These are the big upgrade vs. PlatinumLED’s Platinum Series. We’re talking super-bright, reliable, top brand LEDs.
  • Precision 90-degree XML Collimator lenses for optimal coverage
  • A 14+ wavelength spectrum (including UV and IR), to give your cannabis every kind of light it needs for big yields and dense, potent, flavorful buds.
  • Use it at every stage of the grow: clone, veg and flower modes—color select dimmable switches
  • Replace a 600 to 800W HID light for an average draw of just 330W. Which means over 50% less heat, no need for additional cooling and big savings on your electric bill.
  • Daisy-chain up to four units on one cord
  • Patented heat sinks, whisper quiet fans, dust filter and air flow vents—to keep LEDs working perfectly for longer
  • Modular design—certain faults can be fixed without sending the whole unit away for repair
  • 3-Year Warranty, 90-day Money Back Guarantee, hassle-free returns
  • US Sales and Support staff
  • Well worth the money, but look elsewhere if you’re on a tight budget.
  • If you want a fully programmable/customizable spectrum, this isn’t for you. (Keep reading for our recommendations.)

If the XML350 isn’t the price point or coverage you’re looking for, no problem. The XML lights are Advanced’s flagship lights, but the Diamond Series has plenty of other options available within its range.

The slightly cheaper Diamond Series XTE lights combine Osram LEDs and 5W CREEs. While standard entry-level Diamond Series lights use Bridgelux LEDs only. You’ll notice, though, that in all three cases all the LED chips still come from trusted manufacturers and are American-made.

Read our full review here.

Also available: Diamond Series XML 650.
Alternatives: PlatinumLED P600 (see below); Optic 6.

The MarsHydro ECO 300W is very much one of Mars’ basic, entry-level full spectrum lights—but a very decent budget option. It’s the successor to MarsHydro’s top-selling Mars 300W, which Mars is now slowly phasing out.

And as you’d expect, it’s even better.

What’s so great about it?

  • High-intensity 5W Epistar LEDs are better than you’ll get in some similarly priced lights.
  • Coverage is respectable: 2′ x 2′, or enough for two big plants.
  • Replaces a 150W HID light.
  • Low power draw: only around 116W (even more efficient than the old model!).
  • Max. Yield: 1.0g per watt.
  • Now daisy-chainable (another upgrade on the old model).
  • Quieter and runs cooler than the old model.
  • Suitable for the whole grow—plenty of both blue and red wavelengths in the spectrum.
  • Although the lights are made in China, there’s a service center in California and US and European warehouses to ensure quick shipping.
  • 3-year warranty.
  • Well under $100.
  • No UV or IR wavelengths in the spectrum
  • No veg/bloom switch or dimmers
  • Hanger not adjustable—but you can buy the adjustable one here

This light has been a very popular choice among our readers, hence our recommendation.

But if you’ve got the budget, also consider one of MarsHydro’s newer models in the Reflector Series or Pro II Series. You’ll get brighter, more even coverage and separate veg and bloom switches—not quite as cheap, but still at a very affordable price.

Want to know more? We’ve reviewed the identical but slightly larger MarsHydro Mars600 here.

Also available: Mars ECO 300WMars ECO 600W.
Alternatives: Viparspectra VT300; Roleadro GalaxyHydro 300W (both reviewed below).

Testament to the quality, affordability and popularity of HLG’s quantum boards is just how often they sell out. So if the light you want’s not in stock, sorry, you may just have to wait a bit—but by all accounts, it’ll be worth it!

Why? Because the HLG 550 V2 is the most efficient LED grow light to cover a 5’ x 5’ area! Or 6’ x 6’ for veg. With full-spectrum white light.

Thanks to clever design and the highest quality components, the efficiency is 2.5 umols of PAR per joule. So it’s replacing a 1000W HID light while drawing just 480W at the wall.

  • Surprisingly affordable—even pre-assembled quantum board lights like this one compare very favorably for price with similar power lights from the top manufacturers.
  • Ultra-efficient: 2.5 umols of PAR per joule.
  • Excellent penetration and very even coverage, due to…
  • 1152 top bin Samsung LM301B LEDs packed into an area 26” x 20”
  • Passive cooling, so no noisy fans.
  • High efficiency Mean Well dimmable driver (dimmable up to 50%).
  • Lower than average recommended mounting heights—just 22 – 32”. Meaning plenty of those photons hitting your plants at every grow stage.
  • See your plants in their natural colors, thanks to full-spectrum white light.
  • 3-year manufacturer warranty.
  • Designed and manufactured in the USA.
  • Super-helpful customer service.
  • Not programmable.
  • No in-built timers.

The HLG 550 V2 is available in 3000K or 4000K models. The spectrum of the latter has more blue in it, plus a bit more green and yellow. While the 4000K has a little more red and orange than the 3000K option.

Also available: Various smaller models and kits are also available, just check Amazon.
Alternative: Optic 6.
marshydro mars II 400W - review - smaller image
MarsHydro has over 8 years in the business and a growing reputation. We sell Mars Hydro lights on our store at DazzleKat.com and right now everything has a 10% discount and free shipping.  So for a great deal on these lights direct from the factory, head on over to DazzleKat.com.  Get your discount with the code “10Off” at checkout.

High quality CREE diodes and excellent PAR figures at a very affordable price: what’s not to like?

There’s also a cheaper strand to the Mars Pro II series lights, with Epistar LEDs instead. And they’re great lights too… but CREEs are worth the extra few bucks.

And those CREE diodes are exactly what give these lights such impressive numbers: 1400 umols of PAR(hung at 18″), flowering coverage of 2′ x 4′ and veg coverage of 3.5′ x 6.5′ and a max. draw at the wall of just 355W.

  • Max. yield of 1.8g per watt—great value for money.
  • Replaces a 400-600W HPS/MH light, for a fraction of the energy costs.
  • Reliable, high quality build and components.
  • Excellent for all grow stages.
  • Separate Bloom and Veg switches—saves you money during the veg stage.
  • Much cooler than traditional HID/HPS/MH lighting.
  • 3-year manufacturer warranty.
  • No frills.
  • Switches rather than genuine dimmers.
  • Spectrum doesn’t include UV.

You won’t get fancy features and programmability with MarsHydro, but the sheer power, performance and reliability of these lights is hard to beat at this price.

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