10 Best 320 Watt Led Grow Light of 2025

Tested and Reviewed: Top 10 320 Watt Led Grow Light deals with expert ratings from 8.1 to a perfect 10

May 2026 Edition

Editor's Choice

9.7

ECOHOM

ECOHOM 320W LED Grow Light, 3x3ft Coverage Full Spectrum Daisy Chain Growing Light, Dimmable & Retractable Bar Style Grow Lamp for Indoor Plants Greenhouse Vegetable Flower

Editor's bottom line:

“This 320 watt led grow light is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Adaptive Coverage with Expandable Design Revolutionize your grow space! ECOHOM's LED grow light dynamically adjusts coverage from 3x1.5ft (seedling focus) to 3x3ft (full bloom), perfectly adapting to your plants' growth stages. Achieve uniform canopy penetration from seedling to bloom, eliminating dark corners with optimized edge-to-edge illumination ideal for tight spaces like 120x120x200cm grow tents.
Precision Full-Spectrum Grow Light Featuring 884 high-efficiency LEDs, including 420 white 5000K LEDs, 360 warm 3000K LEDs, 88 deep-red 660nm chips, and 16 far-red 730nm diodes, this 320W grow light delivers a scientifically optimized spectrum. The balanced ratio of cool/warm white and targeted red wavelengths maximizes photosynthesis for vigorous growth, abundant flowering, and higher yields in vegetables and ornamentals.
High-Efficiency Full Spectrum Science Engineered with diodes (3000K + 5000K + 660nm + 730nm), our full spectrum LED grow light mimics natural sunlight while dramatically boosting photosynthesis. The 660nm red accelerates flowering/fruiting, 730nm far-red enhances photoperiod response, and dual whites ensure vigorous vegetative growth. With 2.80 µmol/J PPF efficacy, every watt delivers potent, energy-saving PAR for maximum yield.
Scalable Daisy Chain & Triple Dimming Scale your grow space seamlessly! Connect multiple lights via included RJ12 cables (1.5m) to synchronize lighting. Supports 0-10V, PWM & Resistance dimming for universal controller compatibility. No apps, no Bluetooth achieve precise intensity control through your preferred hardware method.
Commercial-Grade Reliability Built for endurance: Operates at 120-277V AC (277V for North American greenhouses) with stable 320W output. SPD surge protection shields against lightning strikes, while engineered damp resistance ensures reliable performance in high-humidity spaces. Industrial-grade connectors and fanless zero-noise heat dissipation guarantee endurance.
Complete Grow Tent SolutionReady to hang: Kit includes LED grow lights + 2x steel ropes (7.5") + 2x adjustable nylon hangers (6.6 ft) + detachable driver + power cord (6 ft) + screws. Detachable design isolates heat from LEDs, preventing overheating and extending lifespan. Perfect for hydroponics, soil beds, or vertical farming in 3x3 ft tents.
Why ECOHOM Wins Expandable Frame Unique scalability. 660nm+730nm dual red for faster flowering & higher yields. 0-10V/PWM/Resistance dimming. No apps to crash, no screens to break set intensity via knob or controller. Future-Proof Scalability: Daisy Chain Multiple Lights, 120-277V operation. Seamlessly expand from 3x3ft tents to commercial greenhouses
Grow Smarter, Grow Stronger With ECOHOMs Simplicity-Powered Performance!

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Picked by 397 people today

9.5

Spider Farmer

Spider Farmer SE4500 320W LED Grow Lights, Smart App Control, 2X4ft Coverage Full Spectrum Dimmable Bar Style Growing Lamp for Indoor Plants

Main Highlights

MAXIMUM EFFICIENCY WITH BRIDGELUX PREMIUM DIODESThe 2026 SE4500 LED grow light features horticulture-optimized Bridgelux premium diodes, delivering an exceptional efficacy of 3.14 mol/J. Operating at 320 watts, it produces a powerful 913 mol/s of consistent photon output. The extended 3-bar design ensures uniform, edge-to-edge canopy coverage, optimized for 2×4 ft high-yield, full-cycle cultivation.
GROW SMART WITH THE SPIDER FARMER APPTake full control of your grow lights anytime, anywhere with the Spider Farmer App. Simply download the spider farmer app to unlock powerful features like custom light schedules, sunrise and sunset simulation, and remote brightness adjustments. Even while you're away on vacation, you can effortlessly manage your grow light to ensure your plants thrive without missing a beat
OPTIMIZED PLANT-CENTRIC SPECTRUM The SE4500 features a tuned full spectrum: plant-focused 437nm blue (root/foliage boost) + 5055% 660-665nm deep red (max photosynthesis). Paired with premium Bridgelux diodes, it covers 2800-3000K/4800-5000K whites fueling robust growth from seedling to harvest, for peak yields
DIMMABLE WITH DIGITAL DISPLAY Experience precise control with the SE4500 Spider Farmer grow light, featuring the latest dimmable technology and a clear digital display that shows the current brightness level, allowing for easy adjustments to suit your plants' needs. Enhance your commercial growing setup with the ability to daisy chain up to 50 SE4500 grow lights, all controlled by a single master light
5-YEAR COVERAGE High quality products and attentive after-sales service create the irreplaceable Spider Farmer LED grow lights. Five years of after-sales service is provided for the SE series grow lights, and any problems within this period can be repaired at your local repair center (USA/Canada/UK/Germany). Please feel free to contact us about product issues, and we will help you solve them

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9.5

Save 19%

Spider Farmer

Spider Farmer G4500 Cost-Effective 320W 2x4 Coverage LED Grow Lights, Full Spectrum Dimmable Bar Style Led Growing Lamp for Indoor Plants, Upgraded Smart App Control

19% Off

Main Highlights

MAXIMUM EFFICIENCY AND UNIFORM LIGHTThe Spider Farmer G4500 led grow light has a unique elongated light bar design that provides more uniform and comprehensive canopy coverage, especially at the edges of the cultivation area. With high efficiency bridgelux diodes, the G4500 LED grow light is able to obtain 320 watts of power, achieving an impressive PPE of 2.85 umol/J, covering 3x5 feet or 2x4 feet of high-yielding full-cycle growth
ADVANCED FULL SPECTRUM The spider farmer G4500 light is a full spectrum LED grow light (3200-4200K,4800-5000K,650-665nm) with different wavelengths of light, perfect for every stage of plant growth, from seed to harvest.
DIMMING DAISY-CHAINDimming knob allows to adjust the brightness of the light, 10-100% dimming to meet the needs of plant growth. Also daisy chain function supports growers to connect up to 50 of G4500 lights for dimming at the same time. Highly recommended for use in grow rooms, home growing (2x4 grow tents), closet, DWC and hydroponics etc.
5-YEAR COVERAGE FOR PEACE OF MINDThe Spider Farmer G series LED grow light comes with an impressive 5-year coverage, ensuring long-lasting performance and reliability. With U.S.-based service center, you can count on quick and efficient local support whenever needed, giving you complete peace of mind
GROW SMART WITH THE SPIDER FARMER APPTake full control of your grow lights anytime, anywhere with the Spider Farmer App. Simply download the app (available on the Apple Store & Google Play) to unlock powerful features like custom light schedules, sunrise and sunset simulation, and remote brightness adjustments. Even while you're away on vacation, you can effortlessly manage your Spider Farmer G4500 grow light to ensure your plants thrive without missing a beat

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Best Value

9.2

Save 25%

FARMLITE

Grow Light FARMLITE LED Grow Lights for Indoor Plants Full Spectrum Growing Light Plant Hanging Growing Lamps Seedling Daisy Chain Dimmable Board 4x4ft Coverage (320watts)

25% Off

Main Highlights

Daisy-Chain DimmingThis grow light for indoor plant has a dimming button to adjust the light intensity required for different plant growth stages.The daisy-chain function allows you to connect up to 25 LED grow lamps and can be dimmed simultaneously.
Max Coverage Area Plant Lamp Full Spectrum320W Full spectrum (380-410 nm, 660-665nm, 730nm,3200-4200K,4800-5000K) is perfect for veg to grow,6 LED grow lights bars , it can provide evenly distributed light intensity.It can coverage for 4x4ft of high-yielding full-cycle growth.
Detachable Power Supply and Adjustable Height The power supply of our grow lights is removable, which can not only be disassembled freely, but also has the IP66/IP67 waterproof.Our package is equipped with a height-adjustable lanyard, which can meet the height required for different plant growth.Our full spectrum grow lights can up to 50,000 hours to work.
Efficient Heat Dissipation and No NoiseOur grow lights are made of 4 lightweight aluminum bars, which has efficient heat dissipation and cooling functions.it's powerful heat dissipation ability that no need to buy more cooling devices.This led plant light has no fan, there will be no noise.it is very light weight and IP67 waterproof,so it's easy to carry and install.

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9.0

AGLEX

AGLEX 330W Led Grow Lights, Full Spectrum Grow Light with UV IR, Daisy Chain Foldable & Dimmable Plant Bar Style Grow Light for Indoor Growing Commercial Hydroponic Growing Lamp 3x4 FT Core Coverage

Main Highlights

MAXIMIZE YIELDS & CROP QUALITY - AGLEX M320 led plant growing light is with 1170PCS high efficient chips, only consumes 320w with 1170 leds, achieving higher average PPFD with 1189 µmol//s at 3x4ft core coverage. The average yield is more than 2.5g per wattage. The 320w led bar grow light can help you achieve maximum quality and quantity. Wide Input Voltage 100-277V, can meet most input voltage.
DAISY CHAIN GROW LIGHTS - The daisy-chain function allows you to connect more than 100 lights with the RJ12 port at the same time. Not only daisy the solo model M320, you also can connect them with other models of M series grow lights, controlling them simultaneously. This function is very convenient for large area indoor growing and commercial planting. You can adjust the first light to control the rest lights. Note the rest lights dimmer should be at A firstly.
IDEAL FULL SPECTRUM & DIMMING - AGLEX 320W led grow light consists of full spectrum Warm White3000K, Cool White 5000K, Blue 460nm, Red 660nm, UV 405nm and IR 730nm, is infinitely close to natural sun light, perfect for seeding to flowering, applied to the whole stages of indoor growing plant. Growing lamp 320w comes with flexible dimmable function, 4-level dimming knob from 0-100% available, convenient to adjust the brightness according to the plants at different growing stages.
AMAZING HEAT DISSIPATION & ADVANCED FOLDING - Light bar style and aluminum material can contribute to better airflow and great heat dissipation, ensure longer lifetime and lower energy bill. This plant growing light is foldable, it can be folded up to 180°easy to be carried and installed. With 6 led grow light bars, each bar is covered with high-grade glue, easy to clean .
VALUE FOR MONEY- The led grow light 320w is ideal for greenhouses, grow tents, stand rack, vertical farming, etc. If there are any questions or concerns, please feel free to message us. We will help you with great pleasure!

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8.8

ELUFAH

ELUFAH NHI3200 320W LED Grow Lights, Commerial Full Spectrum Bar Style LED Grow Lamp for Indoor Plants, Dimmable Daisy Chain, 3X3ft Coverage Growing Lamp for Hydroponics, Greenhouse Plant Growing

Main Highlights

Excellent Light Quality: The NHI3200 plant light is equipped with premium diodes and an enhanced Grow Pro commercial full spectrum Solution, delivering 3.0µmol/m²/s PPFD at 3X3/4X4ft coverage. Achieves 20% higher yield and 10% energy savings compared to similar lamps, helping plants thrive from seedlings to flowering
Commercial Full Spectrum Sunlike: The NHI3200 320W LED Grow Lights combine 6200K white, 437.5nm blue light, and 730nm DR wavelengths to mimic natural sunlight, promotes photosynthesis, boosts flowering, and increases potency for herbs, vegetables, and flowers
Dimmable Control: Easily adjust brightness (0%-100%) for every stage of plant growth with 5-level dimming knob no complex setup required. Connect up to 20 lights via RJ12 ports from one master light for large-scale setups, ideal for increasing efficiency in commercial setups
Superior Cooling & Durability: The foldable aluminum bars and honeycomb heat dissipation design reduce temperatures by 30% and light attenuation by 15%. IP65 waterproof rating and anodized anti-corrosion coating ensure longevity in humid environments.
3-Year Worry-Free Service: We offer backed by 3-year warranty and 24/7 customer support. Our U.S.-based service center ensures you can count on quick and efficient local support whenever needed, giving you complete peace of mind

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8.6

ELUFAH

Elufah NHI3200 320W LED Grow Lights, Commerial Full Spectrum Bar Style LED Grow Lamp for Indoor Plants, Dimmable Daisy Chain, 2x4ft Coverage Growing Lamp for Hydroponics, Greenhouse Plant Growing

Main Highlights

Excellent Light Quality: The NHI3200 plant light is equipped with premium diodes and an enhanced Grow Pro commercial full spectrum Solution, delivering 3.0µmol/m²/s PPFD at 4X2ft coverage. Achieves 20% higher yield and 10% energy savings compared to similar lamps, helping plants thrive from seedlings to flowering
Commercial Full Spectrum Sunlike: The NHI3200 320W LED Grow Lights combine 6200K white, 437.5nm blue light, and 730nm DR wavelengths to mimic natural sunlight, promotes photosynthesis, boosts flowering, and increases potency for herbs, vegetables, and flowers
Dimmable Controler: Easily adjust brightness (0%-100%) for every stage of plant growth with 5-level dimming knob no complex setup required. Connect up to 20 lights via RJ12 ports from one master light for large-scale setups, ideal for increasing efficiency in commercial setups
Superior Cooling & Durability: The foldable aluminum bars and honeycomb heat dissipation design reduce temperatures by 30% and light attenuation by 15%. IP65 waterproof rating and anodized anti-corrosion coating ensure longevity in humid environments.
3-Year Worry-Free Service: We offer backed by 3-year warranty and 24/7 customer support. Our U.S.-based service center ensures you can count on quick and efficient local support whenever needed, giving you complete peace of mind

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8.3

MARS HYDRO

MARS HYDRO FC4000 Samsung LM301H EVO Bar LED Grow Light 2x4, 765 Diodes with Smart Controller 320W Full Spectrum Daisy Chain Dimmable Commercial Plant Grow Lights for Indoor Growing

Main Highlights

OUTSTANDING EFFICIENCY: Packed with cutting-edge Samsung LM301H EVO diodes, delivering a remarkable 3.14 mol/j per diode and provides an overall PPE of 2.85 mol/j, a PPFD of up to 912 mol/m²/s, making it an excellent choice for commercial cultivation and enhancing flowering to produce higher quality crops and greater yields.
FULL SPECTRUM GROW LIGHT: The FC4000 full spectrum grow light features 650-665nm Rich Red IR, 2800-3000Knm Warm White, and 4800-5000 Knm white spectra, From plant sowing to flowering, it is suitable for the entire growth stage of indoor growing plants. Core Cultivation Coverage 2x4 ft,Max Cultivation Coverage 3x5 ft.
OPTIMAL HEAT DISSIPATION DESIGN: The the Aluminum heatsink with slim profile bars reduce heat keeping your growing space at the perfect temperature.The bar-style design results in even light distribution that promotes uniform plant growth while avoiding hotspots in the center.
SMART CONTROL & FLEXIBILITY: Purchase the iConnectu Controller separately to enable full smart control via WiFi/Bluetooth and the MarsPro App. Manage schedules, sunrise/sunset dimming, and auto-mode remotely while retaining manual dimmer knob functionality. Operate smart and regular lights simultaneously for ultimate growing flexibility.
RELIABLE SUPPORT & SERVICE: Rest easy with our US-based local repair center, ensuring a secure and dependable purchase. Have questions or need assistance? Our dedicated customer service team is ready to helpyour satisfaction is our top priority.

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8.1

FGI

Forever Green Indoors Square 3 320W Full Spectrum LED Grow Light with Far Red Spectrum and Manual Dimming

Main Highlights

Full Spectrum Performance: Features a balanced combination of 3000K and 5000K white LEDs enhanced with 660nm deep red and 730nm far red wavelengths, delivering a natural sun-like spectrum that supports every stage of plant growth from seedling to harvest with optimal photosynthetic response
Powerful Efficiency: Delivers 310W of power with an impressive 2.8 mol/J efficacy and up to 965 mol/s total photon output, providing the intense light energy needed to drive dense flower formation and maximize yields in your growing space
Optimized Coverage Design: Innovative square architecture engineered to provide uniform PPFD distribution across 3x3 or 4x4 grow spaces, ensuring every plant receives consistent light intensity without hot spots or dim corners for even canopy development
Smart Control Features: Equipped with integrated manual dimming function and compatible wifi module for smartphone control through the free Cloud Intelligence App, allowing you to precisely adjust light intensity to match your plants' specific requirements at each growth phase
Professional Construction: Built with extruded aluminum chassis for superior heat dissipation and silent operation, includes steel hanging cables and 120V power cord for quick installation, designed and manufactured in the USA by Seattle-based Forever Green Indoors for long-lasting durability

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8.1

Save 13%

VIPARSPECTRA

VIPARSPECTRA P2000 LED Grow Lights for Seed Starting Vegetables Bloom, 250 Watt Dimmable Plant Light Dimming Daisy Chain Grow Lights for Indoor Plants Full Spectrum in 4x2/3x3 Grow Tent

13% Off

Main Highlights

NEW DIODE LAYOUT: VIPARSPECTRA Newest upgraded P2000 grow lights for indoor plants seed starting veg bloom with more scientifical diodes distribution and high-safety performance LED driver to ensure the most uniform PAR map and the deepest canopy penetration, greatly improving the safety and reliability of the light while maximizing plant yield.
OPTIMAL FULL SPECTRUM GROW LIGHTS & AMPLE COVERAGE: Consists of 660nm of red light, 3000K and 5000K of the white light spectrum, the P2000 growing lights for seed starting provides plants in all stages from veg to flower with everything they need in the natural sunlight. Perfect for 4'x3' vegetative coverage and 4'x2' flowering coverage. Remember to properly adjust the height and brightness accordingly to your plants desired level for optimal growth.
ACCURATE DIMMER FUNCTION & DAISY CHAIN FEATURE: An added dimmer knob is featured to precisely manipulate the brightness level of the light, obtaining perfect growth performance for each growing phase. It can completely turn off the light! Daisy chain function allows you to connect up to 20pcs P2000 grow lights for your commercial growing, horizontal and vertical farming, greenhouse planting and hydroponics etc.
SUPERIOR HEAT DISSIPATION & LOW ENERGY CONSUMPTION: Designed for durability. Silent fanless design. Built-in large areas of solid aluminum heat sinks, essential for heat dissipation while ensuring long lifespan of the light. Adopts high quality LED driver to achieve high PAR output, longer lifespan to speed up plant's grow processes and boost yields while saving you on your energy bill.
TRULY BEST BACK FOR THE BUCK: Plug and Play. Professional guidance, friendly customer service and US local after-sales service provides you with a pleasant shopping experience and helps your plants grow better. Make sure you purchase authentic VIPARSPECTRA grow lights. If you have any questions, please contact us at any time.

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Our Best Overall Choice

Best Choice

9.7

ECOHOM

ECOHOM 320W LED Grow Light, 3x3ft Coverage Full Spectrum Daisy Chain Growing Light, Dimmable & Retractable Bar Style Grow Lamp for Indoor Plants Greenhouse Vegetable Flower

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Adaptive Coverage with Expandable Design Revolutionize your grow space! ECOHOM's LED grow light dynamically adjusts coverage from 3x1.5ft (seedling focus) to 3x3ft (full bloom), perfectly adapting to your plants' growth stages. Achieve uniform canopy penetration from seedling to bloom, eliminating dark corners with optimized edge-to-edge illumination ideal for tight spaces like 120x120x200cm grow tents.
Precision Full-Spectrum Grow Light Featuring 884 high-efficiency LEDs, including 420 white 5000K LEDs, 360 warm 3000K LEDs, 88 deep-red 660nm chips, and 16 far-red 730nm diodes, this 320W grow light delivers a scientifically optimized spectrum. The balanced ratio of cool/warm white and targeted red wavelengths maximizes photosynthesis for vigorous growth, abundant flowering, and higher yields in vegetables and ornamentals.
High-Efficiency Full Spectrum Science Engineered with diodes (3000K + 5000K + 660nm + 730nm), our full spectrum LED grow light mimics natural sunlight while dramatically boosting photosynthesis. The 660nm red accelerates flowering/fruiting, 730nm far-red enhances photoperiod response, and dual whites ensure vigorous vegetative growth. With 2.80 µmol/J PPF efficacy, every watt delivers potent, energy-saving PAR for maximum yield.
Scalable Daisy Chain & Triple Dimming Scale your grow space seamlessly! Connect multiple lights via included RJ12 cables (1.5m) to synchronize lighting. Supports 0-10V, PWM & Resistance dimming for universal controller compatibility. No apps, no Bluetooth achieve precise intensity control through your preferred hardware method.
Commercial-Grade Reliability Built for endurance: Operates at 120-277V AC (277V for North American greenhouses) with stable 320W output. SPD surge protection shields against lightning strikes, while engineered damp resistance ensures reliable performance in high-humidity spaces. Industrial-grade connectors and fanless zero-noise heat dissipation guarantee endurance.
Complete Grow Tent SolutionReady to hang: Kit includes LED grow lights + 2x steel ropes (7.5") + 2x adjustable nylon hangers (6.6 ft) + detachable driver + power cord (6 ft) + screws. Detachable design isolates heat from LEDs, preventing overheating and extending lifespan. Perfect for hydroponics, soil beds, or vertical farming in 3x3 ft tents.
Why ECOHOM Wins Expandable Frame Unique scalability. 660nm+730nm dual red for faster flowering & higher yields. 0-10V/PWM/Resistance dimming. No apps to crash, no screens to break set intensity via knob or controller. Future-Proof Scalability: Daisy Chain Multiple Lights, 120-277V operation. Seamlessly expand from 3x3ft tents to commercial greenhouses
Grow Smarter, Grow Stronger With ECOHOMs Simplicity-Powered Performance!

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