Best LED Grow Lights 2022 | 3x3 Coverage Area

Updated: Sep 8

Growers often spend hours upon hours researching different grow methods and searching for the best grow equipment. One of the more difficult pieces of equipment to research is lighting. There are several different types of lights used for growing plants and dozens of different technical specifications to know. This makes it extremely challenging to learn and filter through the hundreds of grow lights on the market today. I’ve been studying horticulture lighting and growing with LED grow lights for over 7 years now and I’m often asked what are the best LED grow lights on the market today.

In this article, I will reveal my picks for the Best LED Grow Lights in 2022. This list will include LED grow lights that have a flowering coverage area of 3’x3’ and are best for a full-cycle grow (from seedling through flowering). These are complete fixtures only. This list does not include DIY grow lights or lights that require significant assembly. The grow lights are listed in no specific order. For a LED grow light to make this list, I factor in: PAR output, efficiency, spectrum, light spread, diodes, drivers, and warranty. I've excluded grow lights that are over $500 because in my opinion it's simply not worth it to spend more than that to cover a 3'x3' area. Since prices are always changing, click either the Amazon link, Happy Hydro link, or LED Grow Lights Depot link under each light for the most up-to-date price.

Do you need a better understanding of PAR output, spectrum, efficacy, energy consumption, or light spread? Check out this complete Buyer’s Guide for LED Grow Lights


Medic Grow LED Mini Sun-2 LED Grow Light

The Medic Grow Mini-Sun 2 is a full spectrum, plug-and-play LED grow light ideal for grow tents and plant racks. It contains 1350 white diodes and a scattering of Osram red diodes, which means it brings your plants from veg all the way through flower.

Compared with similar fixtures, the Mini-Sun 2 helpfully comes with an onboard LCD dashboard, making it easy to adjust timing and dimming. It's also compatible with TSC-2, GLC-1, and 0-10 V dimming controllers.

Hung at 6" above the canopy, you can expect 2385μmol/m2/s; and at 12", 1748 µmol/m²/s. It draws only 320 watts at a 2.8 PAR efficiency. This high-intensity, high-efficiency fixture works as a stand-alone or can be daisy chained into a more extensive system with standard RJ cable connections.

Amazon link

Medic Grow website link (Discount code: MRGROWIT)

LED Grow Lights Depot link

LEDs: Osram Red, White Full Spectrum

PPFD: 1748 µmol/m²/s

PPF: 896 µmol/s

PAR efficacy: 2.8 µmol/j

Wattage draw: 320W±5%

Coverage area: Vegetative 4' x 4', Flower 3’ x 3'

Light distance: > 6”

Dimensions: 19.8" x 15.86" x 2.6"

Weight: 13.23 lbs.

Warranty: 3-year warranty


AC Infinity IONBOARD S33 LED Grow Light

The IONBOARD S33 LED grow light from AC Infinity expands on their ecosystem of grow tent technology. The S33 is designed to integrate with the AC Infinity Cloudline, Airlift, and Cloudray products for a comprehensive and controlled indoor environment. Paired with their Smart Controllers, you have all the tools to perfect your production.

The IONBOARD S33 has algorithmically placed diodes spanning the usable spectrum, including 3000K, 5000K, 730nm and 660 nm. The unique design promises to penetrate your canopy for better total yields.

Sitting at 12" above the canopy, you'll get roughly 1700 PPFD, but still, this fixture only draws 240 watts. AC Infinity has also ensured this is grow room ready, as the IONBOARD has an IP-65 waterproofing rating and is certified by ETL, CE, and RoHS.

Amazon link (Discount code: MRGROWIT15)

AC Infinity website link (Discount code: MRGROWIT)

Happy Hydro link (Discount code: MRGROWIT)

LED Grow Lights Depot link

LEDs: Samsung LM301B

PPFD: 1702 µmol/m²/s


PAR efficacy: 2.7 µmol/j

Wattage draw: 240W±5%

Coverage area: 3’ x 3’

Light distance: >12”

Dimensions: 18.50” x 18.50” x 2”

Weight: 14.37 lbs.

Warranty: 2 years


Mars Hydro FC 3000 LED Grow Light

Quality diodes make for a quality LED grow light. The Mars Hydro FC 3000 uses the top-of-the-line Samsung and Osram diodes in red, infrared, blue, and white for full spectrum coverage of your 3' x 3' grow tent or closet.

The fixture hits an impressive 1525 PPFD at 8" hang height, drawing 300 watts. This delivers 50 percent higher PPFD than a traditional HID option. In addition, it's completely dimmable, even when daisy-chained into a larger grow light system.

The FC 3000 is ultra-quiet as it doesn't require a fan, plus it has an aluminum heatsink to help remove heat away from the diodes. It has an IP-65 waterproof rating, and is ETL, CE, UKCA, RoHS, and DLC certified.

Amazon link Mars Hydro website link (Discount code: MRGROWIT)

Happy Hydro link (Discount code: MRGROWIT)

LED Grow Lights Depot link

LEDs: Samsung LM301B & Osram 660nm LEDs

PPFD: 1525 µmol/m²/s

PPF: 854 µmol/s

PAR efficacy: 2.87 µmol/j

Wattage draw: 240W±5%

Coverage area: Vegetative 4 'x 4', Flower 3’ x 3’

Light distance: 6” to 18”

Dimensions: 22.8" x 20.4" x 3.2"

Weight: 9.6 lbs.

Warranty: 5-year warranty


ViparSpectra KS2500 LED Grow Light

One of the lightest LED grow lights on the market, the ViparSpectra KS2500 is ideal for hanging in your grow tent. Despite its ultra-lightweight design, it doesn't compromise on output. This fixture is ideal for beginner to intermediate growers who need full lifecycle coverage in a 3' x 3' grow tent.

The ViparSpectra KS2500 LED grow light is dimmable and made with premium Samsung LM301H diodes (3000K, 5000K, 660nm, and 730nm), making it suitable for your most sensitive seedlings as well as the late stages of flowering.

It pulls only 250 watts yet delivers an average of 729 PPFD and up-to a peak of 1000 PPFD. Moreover, thanks to its heat-dispersing design features, it has an improved lifespan - potentially for as long as 100,000 hours.

Amazon link (Discount code: VSMRGROWIT)

ViparSpectra website link (Discount code: VSMRGROWIT)

Happy Hydro link (Discount code: MRGROWIT)

LED Grow Lights Depot link

LEDs: Samsung LM301H 3000K, 5000K, Red 660nm, Infrared 730nm

PPFD: 1000 µmol/m²/s

PPF: 590.5 µmol/s

PAR efficacy: 3.10 µmol/j

Wattage draw: 250W±3%

Coverage area: Vegetative 3' x 3', Flower 3’ x 3’

Light distance: 6” to 18”

Dimensions: 26" x 24" x 1.6"

Weight: 6.9 lbs.

Warranty: 3-year warranty and a 30-day money back guarantee


Spider Farmer® SE3000 LED Grow Light

Whether you are planning out a small 3' x 3' grow tent or a larger grow room, the Spider Farmer SE3000 LED grow light offers maximum uniformity and efficiency. It's designed to replace your traditional 600-watt HID fixture, yet, incredibly, it only draws 300 watts.

This fixture contains full premium spectrum Samsung LM301B diodes (380-410nm, 660-665nm, 730nm, 3200-4200K, 4800-5000K) which have been strategically set to reach the outer edges of the canopy.

The SE3000 LED grow light offers daisy-chained dimming, spanning up to 30 individual lights. It also has a detachable driver, facilitating any maintenance work over its 100,000-hour lifespan. It comes with a 5-year warranty and a 30-day money-back guarantee.

Amazon link (Discount code: MRGROWIT5)

Spider Farmer website link (Discount code: MRGROWIT5)

Happy Hydro link (Discount code: MRGROWIT)

LED Grow Lights Depot link

LEDs: Samsung LM301B, Full Spectrum

PPFD: 1368 µmol/m²/s

PPF: 822 µmol/s

PAR efficacy: 2.75 µmol/j

Wattage draw: 300W±5%

Coverage area: Vegetative 3' x 3', Flower 3' x 3'

Light distance: 12” to 24”

Dimensions: 24.02” x 24.02” x 2.7”

Weight: 13.27 lbs.

Warranty: 5-year warranty and a 30-day money back guarantee


ChilLED Tech Growcraft X3 Mini LED Grow Light

One of the longest-standing names in LED grow light technology is ChilLED Tech. Their ultra-slim profile Growcraft X3 Mini option can increase yields from 30 to 70 percent over conventional grow lights - all while reducing your utility bills and solving your ongoing issues with heat.

The ChilLED Tech Growcraft supplies an impressive 1735 µmol/m²/s that averages out to 526 µmol/m²/s across the 3' x 3' canopy space. Since it's only 1.375 inches thick with a passive cooling design, it's an excellent choice for tight grow spaces. ChilLED Tech is also one of the few companies manufacturing its products in the USA. They offer a substantial five-year warranty on all of their products.

ChilLED Tech website link (Discount code: MRGROWIT)

LED Grow Lights Depot link

LEDs: Growcraft Yield Max Spectrum, 3rd Gen 2020

PPFD: 1735 µmol/m²/s (526 µmol/m²/s average)


PAR efficacy: 2.63 μmol/j

Wattage draw: 200W±5%

Coverage area: Vegetative 3' x 3', Flower 3' x 3'

Light distance: 6” to 24”

Dimensions: 22.5” x 19.5” x 1.375”

Weight: 9.95 lbs.

Warranty: 5-year warranty


PhotonTek SQ300W PRO LED Grow Light

One look at the layout of the PhotonTek SQ300W and it's clear this LED grow light offers something interesting to home-growers. Straight out of the gate, it pumps out 1228 PPFD at a 12" hang height. Even if raised to 40", you can still expect more than 450 1228 µmol/m²/s.

This grow light contains world-class components including 576 white diodes, 24 red, and 24 far red which support your plants from clones to late flower. It draws 310 watts and has an efficacy of 2.7 µmol/j.

The PhotonTek SQ300W LED grow light is fully dimmable and compatible with the external P-TEK Digital Controller (or other universal controllers that connect via RJ cables or 0-10v signaling). Paired with a controller, PhotonTek ensures cultivators maintain precision control over their grow room.

PhotonTek website (Discount code: MRGROWIT)

Happy Hydro link (Discount code: MRGROWIT)

LED Grow Lights Depot link

LEDs: Higher Spec White, Red & Far Red Diodes

PPFD: 1228 µmol/m²/s

PPF: 816 µmol/s

PAR efficacy: 2.7 µmol/j

Wattage draw: 310W±5%

Coverage area: 3.3' x 3.3&#x