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We know it’s a big investment so we’ve hand-picked the best LED Grow Lights.


If you’re looking for the Best LED Grow Lights 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.

We’ve covered a lot of lights below. So for your convenience, here are our Top 11 recommendations for 2019:

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


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

Buy Here

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'


You can get more information on how to get started growing cannabis indoors from our free e-book (get it in the subscription area just below this section), and from our regular reviews of the best grow tents, best nutrients and other top tools and equipment for your growing operation.


category-featured-led-grow-lightsChoosing the best light for your grow room depends on a few factors. You need a light powerful enough to cover the area where you grow, and that may vary depending on whether you have a dedicated space for seedlings and clones, or if your weed grows to maturity in one place.

Another factor is whether you want an all-purpose light, or if you plan to supplement it with other lamps for veg and flowering.

If you’re especially looking for low running costs or stealth growing, then LED grow lights are very much your friends.

Finally, at least with LED grow lights you don’t have to worry about replacing bulbs, dealing with ballast, or running too hot. All those things were problems with HID HPS lights but they aren’t an issue with LEDs.

Let’s take a closer look at the best LED grow lights—and to help you choose the right light for your grow space we’ll make sure to include details of coverage area. And if you want to check coverage areas at a glance, just take a look at the table above.

How to choose the best LED grow light

Here are some of the most important things to keep in mind when choosing an LED grow light to grow cannabis:

  • The area you need to cover: The first thing that you should keep in mind is the area that needs to be covered. By knowing this, you can decide how many LED lights you will need, and which type of LEDs will provide you the best coverage. In order to cover more space, more lights can be placed adjacent to each other.
  • The phases of the plant growth: If you need a full growth cycle, you can select a full-spectrum LED grow light to assist in all phases. Or many lights have switches and/or dimmers for each grow stage.
  • Angle of the LED lens: Also look for the angle of dispersion within the LED bulbs. The greater angles mean more coverage while the lesser angles mean less dispersion and more direct light.
  • Your budget: Factor in the features that are necessary for you and the amount of money you are willing to spend—both up front and on running costs. An LED grow light can be expensive up front, but can save you money long term thanks to the much lower running costs.

Why choose full-spectrum LED grow lights?

The reason is simple.

marshydro-mars-II-400W-menuFull spectrum LED grow lights are a relatively new product on the market and many growers are not all that familiar with these new lighting systems. Most people believe the giant fluorescent lamps or HPS and Metal Halide lamps are the best grow lights to use over an indoor growing marijuana garden, but they aren’t. Full spectrum light systems have the advantage, because:

  • They mimic real sunlight
  • Encourage high yields
  • Can increase potency and flavor
  • Cost less to run over time
  • Run cool and don’t need extra fans
  • Don’t flicker or need ballast
  • Their lamps don’t need replacing for 50,000 hours or more—that’s years of trouble-free service
  • They’re safer and more environmentally friendly

Consider updating an outdated system to a full-spectrum LED panel today. If you go with one of the picks below, we’re sure you won’t look back.

Put together your grow room kit

Some useful gadgets that will be helpful in your grow room:

Beginner’s Setup for Growing Cannabis Indoors

Sunglasses? Yes, we’re serious. You wear them outside, right? Protect your peepers from UV rays indoors too when you’re running a full-spectrum LED light. Remember, these lights are powerful!

Nutrients, even plants need their vegetables and minerals. The nutrients you give them don’t just affect yield, they affect flavor. Don’t have poop-flavored pot. Choose your plants’ nutrients wisely.

Grow tent. Yes, it’s a good idea even if you’re already growing in a closet or enclosed space. It’s easier to control the climate for your weed with a tent. You can protect them from stray light sources when they are supposed to be in the dark and you protect yourself from their light when you’re supposed to be sleeping. Plus, it keeps humidity under control and smells, too.

Light meter. Maybe you think only advanced growers use them, but you can use one, too. Then when you’re advanced, you’ll already know how.

Thermometer and hygrometer. Of course you want to know the ambient conditions in your grow tent. We picked the most kick-ass model on the market to show you. It will last you for years.

If you’re looking for a complete grow tent kit, including lights and everything else you’ll need to grow, check out this Custom Grow Room Builder tool from GrowersHouse.com.

How does it work? Just select how many plants you want to grow, your preferred lighting (LED, HID or CMH) and grow style (soil, coco coir, ebb & flow hydro or flood & drain hydro) and the site will offer you a selection of complete grow room packages ready to have shipped to you. Once assembled, all you’ll need are some seeds!


We selected our list of LED grow lights based on the results they showed and features they offer.

We have also taken into account factors like customer reviews, industry awards and a close look at which lights have proven most popular with our readers.

And we’ve tried to keep our choices within the budget of the average home grower (with a few exceptions).

Finally, in the full article, below our Top 11 Recommendations, you’ll also find some great low budget options, some supplementary lights for flowering, and a selection of grow lights for small spaces.

When you’re interested in any of the lights, just click the ‘Buy’ button to check latest prices on Amazon.

We’ve linked to Amazon because pretty much everyone has an account. But we also highly recommend LED Grow Lights Depot and Growers House. Both give excellent service and it’s often well worth checking them out for exclusive deals and offers.

1 Advanced LED Diamond Series XML 350
2 MarsHydro Mars 300W
3 HLG 550 V2 Quantum Board
4 OPTIC 4 (3rd Gen.) COB
5 BESTVA Reflector Elite-1200W
6 MarsHydro Pro II CREE 128 600W
7 Kind LED K5 XL1000
8 G8LED G8-600
9 VIPARSPECTRA VT300 Reflector 300W
10 Black Dog PhytoMAX-2 400
11 PlatinumLED Platinum Series P900
1 Advanced LED Diamond Series XML 350

Advanced LED Diamond Series XML 350 - EDITOR'S CHOICE: Best LED Grow Light (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.

2 MarsHydro Mars 300W

MarsHydro 300W - EDITOR'S CHOICE: Best Budget LED Grow Light (Under $100)

MarsHydro 300W LED Grow Light - on eBay store

Buy on MarsHydro eBay Store

MarsHydro has over 8 years in the business and a growing reputation. (See this post for why we recommend buying from the MarsHydro eBay store rather than Amazon.)

The MarsHydro 300W is very much one of Mars' basic, entry-level full spectrum lights—but a very decent budget option. And still the company's top seller. 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 132W.
  • 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 300W; Mars ECO 600W.
Alternatives: Viparspectra VT300; Roleadro GalaxyHydro 300W (both reviewed below).

3 HLG 550 V2 Quantum Board

HLG 550 V2 Quantum Board LED Grow Light - EDITOR'S CHOICE: Most Efficient LED Grow Light

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.

(Or if you're reading this in October 2018, check out the LED Grow Lights Depot Croptober Sale too — you'll find a selection of HLG lights and kits at up to 25% off.) 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.

4 OPTIC 4 (3rd Gen.) COB

OPTIC 4 (3rd Gen.) COB LED Grow Light 405W (UV/IR) - Best COB LED Grow Light

Like quantum boards, COB (Chip On Board) lights are super-efficient and give you brilliant light penetration. Both also produce full-spectrum, natural-looking white light. The main difference is the way the diodes are spread across the unit—loosely speaking, a quantum board is like a COB light but with the diodes spread out. Optic's COB lights boast genuine USA-made CREE XLAMP CXB2540 80W chips to give you coverage of 3.3' x 3.3' for veg and 3' x 3' for flowering.


  • Powerful and efficient: yields of up to 1.8g per watt—1.62 lbs per harvest.
  • Commercial level PAR output at an accessible price—1250 u/mols at center of footprint when hung at 24″.
  • Equivalent to a 600W HPS light but consumes only 405W at max power.
  • Bloom boost switch for flowering—turns on 64 Epistar and Bridgelux 5W LEDs.
  • White light, full spectrum output designed for cannabis—including UV and IR.
  • See your plants in their natural colors.
  • Built-in timer.
  • 5-year warranty.
  • “Industry best Return on Investment”, according to manufacturer.


  • Not as programmable as some similarly priced lights.
  • Not dimmable.
  • Quantum boards are better for short grow spaces—they can usually be hung closer to the plants.

The Optic 4 should be plenty large enough for many home growers. However, for bigger or smaller grows, Optic LED COB lights also come in a range of different sizes—all of them boasting pro-quality CREE diodes at a relatively accessible price. We favor quantum boards over COBs, just slightly. But there's really nothing much in it. Both give even coverage, excellent penetration and enviable yield per watt. So just go for whichever best suits your grow space. Either way, you'll not be disappointed!

Also available: Optic 1; Optic 2; Optic 6; Optic 8+.

5 BESTVA Reflector Elite-1200W

BESTVA Reflector Series Elite-1200W - Best LED Grow Light Under $200

Like MarsHydro and Viparspectra, BESTVA aims to create "well designed, well made fixtures at reasonable prices and no unnecessary extras" (BESTVA stands for best value). Unlike some budget brands, they've also been in the business a similar length of time to Mars and Vipar—around 8 years now—so we're happy to recommend one of their lights here. This one's a big seller on Amazon too. Probably because you get a lot of power for not a lot of cash—PAR at the center of the footprint is 1221 umols/m²s (hung at 24").


  • Footprint of 4′ x 5.2′ when hung at 24″.
  • Replaces an 800W HPS/MH light but draws only 280W.
  • 60 dual-chip 10W Bridgelux and Epiled diodes.
  • Separate Bloom and Veg switches—saves money during the veg stage.
  • Passive cooling, so no extra moving parts that could fail.
  • Lifespan of 100,000 hours.
  • 3-year warranty and good reputation for customer service.


  • We prefer dimmers to Bloom/Veg switches that just turn diodes on/off rather than dim their intensity. Genuine dimmers can help with a smooth, gradual transition into flowering (higher intensity light) that minimizes shock to your plants.

Even if you shouldn't expect average PAR across the footprint to be as good as the specs at the center, this is still an excellent light for the money. The customer reviews on Amazon and BESTVA's own site are generally pretty glowing too.

Also available: Elite-600W; Elite-2000W.

6 MarsHydro Pro II CREE 128 600W

MarsHydro Mars Pro II CREE 128 600W - Best LED Grow Light Under $500

MarsHydro Mars Pro II CREE 128 600W – Best LED Grow Light Under $500

Buy on MarsHydro eBay Store

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.

7 Kind LED K5 XL1000

Kind LED K5 XL1000 - Best Programmable LED Grow Light

Named "Best LED Innovation" by High Times STASH Awards 2017

Here's a manufacturer that's won more than one High Times STASH award. In 2016, Kind LED won "Best LED Innovation" for its GH Series of supplemental bar lights. Then in 2017, it got the same award again for this impressive beast of a light, the Kind LED K5 XL1000. This is a true 1000 Watt HID replacement. It comfortably and evenly covers a footprint of 5' x 5' while drawing only 630W, to give you outstanding bud quality and yield per watt, plus significant electricity savings.


  • Programmable and fully customizable 12-band spectrum (including UVB & IR) and in-built timer.
  • You can exactly mimic the seasons and the sun’s passage through the sky during the day. It will slowly “rise” and intensify and slowly “set”.
  • Set different light recipes and schedules to optimize for different strains of cannabis.
  • Lights can be set up and controlled with a small remote control.
  • Control up to 100 lights at once with one remote!
  • The XL1000’s LEDs are truly dimmable—i.e. not just turning off diodes like many “dimmable” lights.
  • Runs very cool—without noisy internal fans or the need for extra cooling in your grow room.
  • UL Listed, meaning that it meets some very high safety standards.
  • Lifetime customer support and a 90-day money back guarantee


  • As you’d imagine, these aren’t cheap… But you get what you pay for.

We think this is pretty much the gold standard of programmable LED grow lights right now. And if you need something this powerful, it's more than likely the light for you. Read a full review here.

Also available: Kind K5 XL750.

Alternative: California Lightworks Solar System 1100 UVB. (Also superb, but who are we to argue with High Times?)

8 G8LED G8-600

G8LED G8-600 Full Spectrum MEGA LED Grow Light - Best LED Grow Light for Veg Stage

"Best LED Grow Light" winner High Times Magazine's STASH Awards 2016

The G8LED 600W MEGA LED Grow Light from DormGrow is well worth the price paid for the quality of what you get. High Times Magazine named versions of this light a winner in its 2016 and 2014 STASH Awards (and the bloom-only version was named "Best LED Light" in 2017). It offers 8-band wavelength plus IR plus UV so it’s there to cover the entire growth cycle of your weed and make sure it's potent and tasty. We've named it 'Best for Veg Stage' as, although it can be used for a full grow, DormGrow recommends adding a supplementary red light during flowering for best results.


  • Coverage of 4′ x 5′ at both flowering and vegetative stages, and canopy penetration of 5′.
  • Replaces an 800-1000W HID light, but draws only 380W at the wall.
  • Spectrum includes UV and IR.
  • High quality lights but very suitable for beginners.
  • These lights stay cool enough to touch even when they have been running for a full 24 hours.
  • 2-year warranty, serviced by DormGrow.
  • Excellent customer service—they even reach out to their customers to ensure everything is going smoothly.


They claim that running a light at full capacity and intensity, but adding some extra red wavelengths at flowering, is a more economical and effective way to use LED technology, compared to the usual approach where a single light is used and some of the red LEDs are dimmed or turned off during veg. Evidently High Time agrees! Read our full, in-depth review here.

Also available: Need something more powerful? Check out our review of the G8-900.

Alternatives: Kind K5 XL-1000; HLG 550 V2 (both reviewed above); Black Dog PhytoMAX-2 800.

9 VIPARSPECTRA VT300 Reflector 300W

VIPARSPECTRA VT300 Reflector-Series 300W (Dimmable) - Best LED Grow Light for a Small Grow Room (Up To 2.5' x 2.5')

The VIPARSPECTRA VT300 has been pleasing a lot of customers because it hits the right balance of features for the money—it's currently Amazon's top selling Viparspectra light (Jan 2019). Indeed, what Viparspectra lights do so well is simply being affordable without too much compromise. You can always expect good build quality, reliability and excellent performance. And unlike many other affordable brands, Viparspectra has a long track record. So you know the price isn't too good to be true.


  • Cover a grow space of 2.5′ x 2.5′ hung at 24″ and 2′ x 2′ at 18″ without hotspots
  • Full-spectrum, 12 wavelengths (including IR).
  • PAR when hung at 18″ is 565 at the center of the footprint.
  • Can replace a 250W HID light while drawing only 134W.
  • LEDs are good quality, high-intensity 5W Bridgelux and Epileds chips.
  • Dimmable Veg and Bloom channels.
  • Remote control to operate light and program timer.
  • Built-in timer.
  • Daisy-chaining.
  • Lifespan of 100,000 hours.
  • 3-year warranty and a 30-day satisfaction or return guarantee.


  • No UV in the spectrum.

This is a highly affordable light (under or around $100), with quality and performance not compromised by the inclusion of unnecessary features. Read our full review here.

Also available: VT450; VT600S; VT900; VT1200; VT1200S; VT1350; VT1800.

Alternatives: MarsHydro ECO 600W; KingPlus 600W (see below).

10 Black Dog PhytoMAX-2 400

Black Dog PhytoMAX-2 400 - Best Commercial Level LED Grow Light

If you want to join the pros, Black Dog LED is one of the biggest names around. As well as a spectrum developed specifically for cannabis over more than 6 years, Black Dog lights are efficient and super-powerful. We've chosen the PhytoMAX-2 400 model because it's a good size for most home grows. It gives even coverage over an impressive 4.25' x 4.25' footprint for flowering and up to 5.25' x 5.25' for veg.


  • Proprietary Phyto-Genesis spectrum maximizes yield, terpenes and potency—includes UV and IR.
  • Top bin diodes from CREE, OSRAM, etc.
  • 641 μMol/s total photon flux.
  • Replaces a 600W MH/HPS light—but drawing only 420W.
  • Large heatsink and quiet, reliable internal fans for outstanding heat management and maximum LED efficiency and lifespan.
  • White-looking light allows you to see your plants’ natural colors.
  • 6-12 month average return on investment—excellent value per watt.
  • Lifespan up to 70,000 hours (including the fans).
  • ETL, CE, FCC, RoHS safety certified.
  • Industry leading 5-year warranty.
  • USA-made.


  • Big up-front investment, but should pay for itself in bigger yields and low running costs.

If you want to take your home growing to the next level, Black Dog lights are reliable and widely trusted. They're proven to grow big yields of top quality bud. You won't find many growers with anything but praise for these beasts.

11 PlatinumLED Platinum Series P900

PlatinumLED Platinum Series P900 - Best 1000W HPS Replacement

All of the grow lights from the Platinum Series use revolutionary full-spectrum technology to keep your grow room and plants cool while meeting all their light needs. The P900 offers PlatinumLED's trademark “3x intensity” lights that offer three times the brightness of many competing LED grow lights. The P900 has 12 bands of light wavelengths including infrared and ultraviolet, the parts you can’t see with the naked eye. This panel, and others like it in the Platinum lineup, is about as close to sunlight as you can get indoors. But this isn’t a one-trick pony. This panel is good for every stage of growing cannabis.


  • Can replace a 1000 watt HPS light at full intensity, while still only using 515 watts of electricity—same or better light quality and intensity at around half the price.
  • Bloom coverage of 3′ x 5′, veg coverage of 4′ x 6′.
  • Awesome PPFD of 1250 umols hung at 24″.
  • Platinum LED claim “highest PAR per watt”.
  • 12-band full-spectrum from top bin US-made diodes.
  • Spectrum includes UV and IR.
  • Separate Veg and Bloom switches for energy savings during veg phase and a red boost during flowering.
  • LED drivers work with any voltage—can be used worldwide.
  • Excellent 5-year complete warranty with a 90-day money-back guarantee.
  • Established manufacturer with a proven track record.


  • High up-front cost, but should pay for itself with lower running costs, better bud and higher yields.

An adult cannabis plant takes up at least 1 square foot of space in a 3-gallon pot, so the P900 can flower between 12 to a maximum of 24 at a time. Which should be more than enough power for most home growers.

Also available: P150; P300; P450; P600; P1200.

Alternatives: HLG 550 V2 Quantum Board (see above).


Here’s our FAQ about LED grow lights. If you’re new to growing, or just want to brush up, enjoy! Also, check out our beginner’s guide to marijuana grow lights, which covers everything below in greater detail.
What is a LED Grow Light?2018-10-05T20:47:57+00:00

What is a LED Grow Light?

Let’s start with a little intro about LED grow lights.

  • LED:that stands for “light emitting diode”
  • Grow:it helps plants to grow best when they have been planted indoors
  • Light:it provides light energy that will mimic the way the sunlight would have affected these plants when grown outdoors

It provides various wavelengths of visible and invisible light including UV and IR rays that can directly increase the growth and hence the yield of any plant grown under these lights.

How Do LED Grow Lights Work?2018-10-05T20:48:36+00:00

How Do LED Grow Lights Work?

How can these tiny little lights can help your plants grow better when there is no sunlight?

Plants have a tendency to absorb more blue light than other colors like white or green; hence, the UV rays are best to induce vigorous plant growth, while the infrared rays are best catalysts for germination and blooming boost.

The wavelengths can be adjusted according to the requirements of your plants in the grow room. If you have plants to grow that are in their vegetative phase, using UV rays would increase the cell division when the plants absorb the rays. Due to the increase in cell division, the plants grow quickly and result in more yield.

In case you need to treat your plant during the flowering stage, the most effective LED lights are those which provide IR, or infrared, rays. These rays are readily absorbed by the buds and apex of the plant and this causes them to bloom quickly and heavily.

We would recommend an LED grow light that has a wide range of wavelength options available, so that you can adjust according to the effects that you need.

The amount of light, type of light emitted, types of plants being grown, Lumen per area, wavelength, and the height between plants and the light can all affect the growth of the plant being treated.

What Are the Benefits of Using LED Grow Lights?2018-10-05T20:49:13+00:00

What Are the Benefits of Using LED Grow Lights?

Before the rise of LED grow lights, there were other similar methods in use. These include high-pressure sodium lamps and fluorescent bulbs. These methods were not at all favorable for small grow room owners who need to have a small, compact structure. These lights needed a lot of space to set all the equipment, due to the huge amount of heat being produced and the need to have a proper ventilation system to avoid heat build-up. This mess made that process out of reach for the small grow room owners.

LED lights take up a minimal amount of space, don’t contribute extra heat, don’t need their bulbs replaced, don’t have ballasts to manage, and use half the electricity to run.

  1. Compact and easy to install:These lights come in a very compact structure that is very easy to handle. You will not need any specific knowledge to get them installed. You can just have a proper place to hang them above the plants at the required distance.
  2. No need for separate ventilation set up:These lights don’t emit a lot of heat and there is no need to have a proper ventilation system. They can work without any huge ventilation setup and type of large fans.
  3. Can be installed adjacent to each other:As said earlier they have a compact design and most of them can be installed adjacent to each other in order to give more coverage.
  4. Variety and control:Their wavelengths can be adjusted easily and also the modes for vegetative and blooming phase can be chosen.

All these factors have made us great fans of these LED grow lights, because they give us great results with a lot less hassle and cost.

How Many Watts Do You Need?2018-10-05T20:49:33+00:00

How Many Watts Do You Need?

When it comes to LED grow lights, it’s not really about the wattage.

Firstly, wattage isn’t a measure of brightness or intensity. It’s just a measure of how much power is being drawn at the wall. Yes, if you compare two bulbs of different wattage but exactly the same technology, then the higher wattage will be the brighter bulb.

However, LEDs are much more efficient than HID lights, so an LED that draws the same power as an HID will generally be much brighter.

To complicate things further, there are various competing LED technologies.

And then there’s the matter of secondary optics to intensify brightness even further…

So How Do You Know If Your Plants Are Going To Be Getting Enough Light?2018-10-05T20:51:05+00:00

So how do you know if your plants are going to be getting enough light?

Well, first it depends on which strain you’re growing. Different strains have different light requirements. So we recommend that you first pick a strain, then start looking at grow lights.

Once you know how much light your chosen strain will need, compare it with the PAR and coverage charts provided by grow light manufacturers. A reputable manufacturer should give you plenty of information about what size of grow area their lights can cover and at what heights, as well as the PAR values across the whole footprint. Naturally you’ll need a light that can supply at least as much PAR as your chosen strain needs, but for maximum yields the more PAR you can give your plants the better.


Well, we hope you’ve enjoyed this massive buyer’s guide to the best LED grow light for your plants. For some more reviews and interesting reading,
check out Big Buds Guide too. Good luck and happy growing!

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