Updated: January 1, 2026
LED grow light technology has evolved rapidly in recent years. A light considered top-tier today may be outperformed just months later by a newer, more efficient model. With hundreds of options on the market—each boasting different specs, diode types, and marketing claims—it can be overwhelming to know which fixtures truly deliver.
I’ve been studying horticultural lighting and growing with LED grow lights for over a decade. One of the most common questions I get is: What are the best LED grow lights available today?
In this article, I’ll share my picks for the Best LED Grow Lights in 2026—specifically for grow setups with a 4′×4′ flowering footprint. These lights are suited for full-cycle cultivation, from seedling to harvest. I’ve only included complete fixtures (no DIY kits or lights requiring significant assembly).
Each light was evaluated based on key factors: PAR output, efficacy, spectrum quality, coverage uniformity, diode and driver quality, and warranty. I’ve excluded lights priced over $800, as I believe it’s unnecessary to spend more than that for a 4′×4′ area in most home grow setups.
Prices may vary, so check the product links for the latest deals. Need help understanding terms like PAR, spectrum, or efficacy? Check out my Complete Buyer’s Guide for LED Grow Lights.
FloraFlex 400W LED Grow Light
The FloraFlex 400W full-spectrum LED grow light is a high-output fixture built for indoor growers targeting a 4′×4′ flowering footprint. It delivers a balanced spectrum across all growth stages using a blend of 3000K and 5000K white diodes, 660 nm deep red, and 730 nm far-red, ensuring strong vegetative growth and enhanced flowering performance.
This fixture offers a reported photon efficacy of ~2.7 µmol/J and total output of around 1,890 µmol/s, placing it among the top performers in its class. The bar-style layout improves light distribution across the canopy, minimizing hotspots and maximizing uniformity in 4′×4′ tents or grow rooms.
Additional features include tool-free assembly (under 5 minutes), daisy-chain capability, and passive cooling via an aluminum heatsink—ensuring quiet operation with minimal heat buildup. The unit is also UL and DLC certified and backed by a 5-year warranty, highlighting its durability and compliance with industry standards.
For growers prioritizing output, spectrum quality, and build reliability in a 4′×4′ footprint, the FloraFlex 400W offers a well-rounded, efficient solution that supports full-cycle cultivation without compromising coverage or intensity.
-
LEDs: Custom full-spectrum diodes (3000 K white, 5000 K white, 660 nm red, 730 nm far-red)
-
PPFD: N/A
-
PPF: ~1,890 µmol/s
-
PAR efficacy: ~2.7 µmol/j
-
Wattage draw: 400 W
-
Coverage area: 4′×4′ or 5′×5′
-
Light distance: 12″-24″
-
Dimensions: One listing shows ~37.8″ × 5.91″ × 8.27″
-
Weight: ~14.82 lbs
-
Warranty: 5-year standard warranty
Vivosun LumaLight 400W LED Grow Light
The Vivosun LumaLight 400W full-spectrum LED grow light is designed for high-efficiency performance in a 4′ × 4′ flowering footprint. With a draw of 400W and a claimed photon efficacy around 2.8 µmol/J, it offers dependable intensity and spectrum for full-cycle cultivation.
The LumaLight 400W features a broad-spectrum array that includes whites, blues, reds and far-red wavelengths (including 3000K, 5000K, 660 nm and 730 nm), supporting healthy growth from seedling through bloom. Its strategic diode layout promotes uniform canopy coverage, reducing hotspots and ensuring consistent illumination across the full footprint.
Built for convenience and durability, this fixture incorporates tool-free assembly, dimming presets, and smart control compatibility via the optional “GrowHub” app—allowing scheduling, intensity control, and remote adjustments. Its IP65-rated housing withstands humid conditions, and the thermal management features reduce heat and maintain quiet operation.
For growers working in a 4′ × 4′ tent, the LumaLight 400W delivers a robust mix of performance, spectrum and practical features. If you’re looking for a reliable, feature-rich LED fixture suited to a dedicated 4′ × 4′ grow area, this model offers excellent value, full-spectrum coverage and solid build quality.
Vivosun website link (Discount code: MRGROW15)
-
LEDs: Full‑spectrum white + blue + red + far‑red diodes (3000K, 5000K, 660 nm, 750 nm)
-
PPFD: N/A
-
PPF: N/A
-
PAR efficacy: 2.8 µmol/J
-
Wattage draw: 400w
-
Coverage area: 4′ x 4′
-
Light distance: 12″, 18″, and 24″
-
Dimensions: 23.9″ x 23.6″ x 2.6″
-
Weight: 13.8 lbs
-
Warranty: 5‑year after‑sale service
HortiBloom Mega Eco 500 LED Grow Light
The HortiBloom Mega Eco 500W is a full-spectrum LED grow light designed for indoor growers who want high output and strong efficiency in a 4′×4′ flowering footprint. Drawing approximately 500 watts, it features premium Samsung LM281 Pro white diodes and Osram red/far-red chips, delivering a claimed PPE of around 2.7 µmol/J—solid performance for its class.
The light’s 110° beam angle promotes even canopy coverage, reducing hotspots and light drop-off. Spectrum-wise, it spans the full plant lifecycle—from seedling through flower—while the 0–100% onboard dimmer and 0–10V RJ port enable flexible light control via manual or external scheduling systems.
Built for durability and indoor readiness, the Mega Eco 500W includes an IP65 waterproof rating, UL-listed driver, and a 5-year warranty, making it suitable for humid grow tents or rooms. Tool-free assembly and daisy-chain capability further simplify setup in multi-light configurations.
For growers working with a 4′×4′ grow area, this fixture strikes a strong balance of power, spectrum, and reliability. Its efficient output, quality build, and light uniformity make it a compelling choice for full-cycle growing without pushing beyond the $1,000 mark.
-
LEDs: Samsung LM281 Pro + Osram deep-red & far-red diodes.
-
PPFD: N/A
-
PPF: ~1,350 µmol/s
-
PAR efficacy: ~2.7 µmol/j
-
Wattage draw: 500 W
-
Coverage area: 4′×4′, extending to ~4.5′×4.5′
-
Light distance: 12″–36″
-
Dimensions: 39.3″ × 39.3″ × 1.6″
-
Weight: ~19.5 lbs
-
Warranty: 5-year manufacturer warranty.
AC Infinity IONBOARD S44 LED Grow Light
The IONBOARD S44 is a high-performance full-spectrum LED grow light engineered for 4′×4′ indoor grow spaces. It features Samsung LM301 series diodes arranged in an “algorithmic” layout to ensure more even PAR distribution and deeper canopy penetration—crucial for achieving uniform growth across the entire footprint.
This fixture draws around 400 W and supports full-cycle cultivation with a balanced spectrum of 3000K + 6500K whites, 660 nm deep red, and 730 nm far-red wavelengths. Its passively cooled, fanless aluminum unibody design helps maintain low noise and minimal heat output, while an IP65 rating ensures durability in humid conditions.
Control-wise, it features a 0–100% dimmer knob and smart automation compatibility via AC Infinity’s UIS™ platform, allowing for scheduling, remote adjustments, and integration with other UIS-compatible gear. This gives growers both manual and app-based control options for optimizing output through all growth stages.
Overall, the IONBOARD S44 delivers a premium lighting experience with high efficiency, durable construction, and smart flexibility—making it an excellent choice for serious growers aiming to maximize performance in a dedicated 4′×4′ flowering environment.
Amazon link (Discount code: MRGROWIT15)
AC Infinity website link (Discount code: MRGROWIT15)
Happy Hydro website link
-
LEDs: Samsung LM301H / LM301B diodes
-
PPFD: ~1,900 µmol/m²/s
-
PPF: N/A
-
PAR efficacy: ~2.75 µmol/j
-
Wattage draw: ~400-430 W
-
Coverage area: 4′×4′
-
Light distance: 12-18″
-
Dimensions: 23.6″ × 23.6″
-
Weight: N/A
-
Warranty: 2-year warranty
Medic Grow Fold-650 LED Grow Light
The Medic Grow Fold-650 is a high-output, full-spectrum LED grow light built for indoor growers who want commercial-grade performance in a 4′×4′ flowering footprint. With a 650 W power draw and premium Osram diodes, it delivers a PPF of ~1,820 µmol/s and a photon efficacy of ~2.8 µmol/J, making it a top-tier choice for dense canopy penetration and consistent light distribution.
The fixture’s six-bar design enhances uniformity across the grow space, minimizing hotspots and maximizing PAR spread. Its full-spectrum output includes white and 660 nm red diodes, supporting all growth phases from seedling to bloom. A built-in dimmer (0–100%) allows easy adjustment of light intensity to suit different stages or environmental conditions without changing fixtures.
Additional features include passive cooling for silent operation, RJ14 controller compatibility, and a foldable frame for easy transport and setup. It’s also IP66-rated, making it durable for humid environments.
Overall, the Fold-650 offers powerful output, smart adjustability, and a durable design—ideal for growers seeking maximum efficiency and uniformity in a 4′×4′ tent or grow room. Proper height and dimming management ensure optimal PPFD without overexposure.
Medic Grow website link (Discount code: MRGROWIT)
-
LEDs: Osram diodes (V1 full-spectrum) with 660 nm red and white chips
- PPFD: N/A
-
PPF: ~1,820 µmol/s
-
PAR efficacy: ~2.8 µmol/j
-
Wattage draw: 650 W
-
Coverage area: 4′×4′
-
Light distance: ≥ 6″
-
Dimensions: ~43.52″ × 41.93″ × 3.44″
-
Warranty: 5-year manufacturer warranty (in many regions)
Vivosun AeroLight Wing AW400 LED Grow Light
The AeroLight AW400 is a premium full-spectrum LED grow light built for mid-sized indoor grow spaces, with a flowering footprint rated at 4′×4′. Drawing approximately 400 W, it features top-tier Samsung diodes and achieves a reported photon efficacy of ~2.9 µmol/J, delivering efficient, high-output performance.
A standout feature is its built-in circulation fan, integrated directly into the center of the fixture. This design pushes air downward into the canopy, improving gas exchange, temperature control, and humidity balance—particularly valuable in enclosed grow tents. The fixture also features foldable wing-style panels, allowing customizable light spread and better coverage uniformity across the canopy.
The AW400 provides full-spectrum output from seedling through bloom, including white light, 660 nm deep red, 730 nm far-red, and UVA. Dimmable and compatible with smart control systems (like VIVOSUN’s GrowHub app), it supports automation, spectrum tuning, and precise light management.
In a 4′×4′ grow tent, the AeroLight AW400 offers a strong mix of power, spectrum control, and integrated airflow—minimizing the need for extra equipment. With proper hanging height and intensity settings, it’s an efficient, all-in-one solution for serious small-to-mid scale cultivation.
Amazon link (Discount code: MRGROW15)
Vivosun website link (Discount code: MRGROW15)
-
LEDs: Samsung LM301H diodes
-
PPFD: ~691 µmol/m²/s
-
PPF: N/A
-
PAR efficacy: ~2.9 µmol/j
-
Wattage draw: 400 W
-
Coverage area: 4′×4′
-
Light distance: 12-18″
-
Dimensions: 26.4″ × 26″ × 2.2″
-
Warranty: 3-year after-sales service listed
Mars Hydro FC 4800-EVO LED Grow Light
The Mars Hydro Smart FC4800 EVO is a powerful full-spectrum LED grow light built with premium Samsung LM301H EVO diodes. Drawing approximately 480 W, it delivers a high photosynthetic photon efficacy (PPE) of ~2.85 µmol/J and a PPF of 1,366 µmol/s—offering excellent output for a 4′×4′ flowering footprint.
This fixture combines intensity with intelligent control features. Through the Mars Hydro app, growers can schedule light cycles, adjust intensity, daisy-chain multiple fixtures, and enable sunrise/sunset simulation. These smart-grow features provide added precision and automation for full-cycle indoor growing.
Its bar-style layout ensures uniform light distribution, while the wave-shaped heatsink and removable driver box assist with heat dissipation—keeping ambient temps manageable in grow tents. The full-spectrum output includes warm white, cool white, deep red, and far-red wavelengths to support all growth stages from seedling to harvest.
For growers targeting a 4′×4′ area, the FC4800 EVO offers a robust combination of output, spectrum, and control. With proper hanging height and airflow management, it delivers efficient, high-intensity coverage—making it a great fit for both hobby and serious cultivators.
Amazon link
Mars Hydro website link (Discount code: MRGROWIT)
-
LEDs: Samsung LM301H/EVO diodes
-
PPFD: N/A
-
PPF: ~1,366 µmol/s
-
PAR efficacy: ~2.85 µmol/j
-
Wattage draw: 480 W ±5%
-
Coverage area: 3′×3′ / Max ~4′×4′
-
Light distance: 12–18″
-
Dimensions: 23″ × 23″ × 3.6″
-
Weight: 16 lbs
-
Warranty: 5-year manufacturer warranty in many regions
Photontek X 465W Pro LED Grow Light
The PhotonTek X 465W Pro is a high-efficiency full-spectrum LED grow light engineered for serious indoor cultivation. With a power draw of 465 W, it delivers a PPF of approximately 1,256 µmol/s and a system efficacy of ~2.7 µmol/J, making it ideal for a 4′×4′ flowering footprint.
Its modular five-bar design ensures excellent light distribution across the canopy, minimizing hotspots and providing uniform PAR coverage. The full-spectrum output supports all plant stages—seedling through flowering—with a balanced blend of white, red, and far-red diodes.
A standout feature is the dimmable driver (0–10 V), which provides flexibility to fine-tune intensity throughout the grow cycle. The passive cooling system keeps noise low and temperature under control, while the IP65 rating ensures protection in humid environments.
Overall, the X 465W Pro offers high performance, energy efficiency, and reliability. Its spread, spectrum, and output make it a strong choice for growers looking to maximize yields in a 4′×4′ tent or grow room. Just be sure to adjust hanging height and dimming to match plant needs at different growth stages.
Amazon link
Photontek website link (Discount code: MRGROWIT)
Happy Hydro website link
-
LEDs: High-bin Osram & Lumileds diodes
-
PPFD: N/A
-
PPF: ~1,256 µmol/s
-
PAR efficacy: ~2.7 µmol/j
-
Wattage draw: 465 W
-
Coverage area: 3.3′×3.3′ to 4′×4′
-
Light distance: 12-18″
-
Dimensions: ~39.29″ × 35.43″ × 2.92″
-
Weight: ~24.25 lbs
-
Warranty: 5-year manufacturer’s warranty
Spider Farmer SE5000 LED Grow Light
The Spider Farmer SE5000 is a high-efficiency, full-spectrum LED grow light built with top-tier Samsung LM301H EVO diodes, offering excellent performance for indoor growers working with a 4′ × 4′ flowering footprint. Drawing approximately 480 W, it delivers a reported PPF of ~1,420 µmol/s and PPE of ~2.9 µmol/J, placing it among the most efficient lights in its category.
Its six-bar layout ensures even canopy coverage and reduces hotspots, helping maximize yield potential across the entire grow space. The light spectrum includes 2800–3200K warm white, 4800–5000K cool white, and 660–665 nm red with IR/UV supplementation, making it suitable for all growth stages—from seedling to bloom.
Smart features include Bluetooth and WiFi app control (for scheduling, dimming, and PPFD target mode), a manual dimmer knob, and daisy-chain compatibility for syncing multiple fixtures. The fanless, passively cooled design keeps noise low while maintaining thermal efficiency.
In short, the SE5000 combines power, precision, and smart control in a thoughtfully designed form factor. It’s a top-tier option for growers seeking reliable, high-output lighting in a 4′ × 4′ tent or grow space.
Amazon link
Spider Farmer website link (Discount code: MRGROWIT5)
-
LEDs: Samsung LM301H EVO diodes
-
PPF: ~1,420 µmol/s
-
PAR efficacy: ~2.9 µmol/J
-
Wattage draw: ~480 W ±5%
-
Coverage area: 4′×4′
-
Light distance: 12-16″
-
Dimensions: 33.6″ × 33.56″ × 3.04″
-
Weight: 14.6 lbs
-
Warranty: Up to 5-year manufacturer warranty (region-dependent)
TotalGrow MH Lumyre 480 LED Grow Light
The MH Lumyre 480 is a high-output full-spectrum LED grow light designed for efficient, uniform coverage across a 4′×4′ flowering area. Drawing 480 W, it delivers a reported efficacy of ~2.6 µmol/J, providing strong light intensity for serious indoor growers. Its slim, low-profile frame (just 2.3″ tall) and multi-bar LED design ensure even PAR distribution and minimal hotspots across the canopy.
The fixture’s 0–10 V dimming control allows precise intensity adjustment for different growth stages, while its integrated driver simplifies setup and reduces clutter. The MH Lumyre 480’s average PPFD of ~750 µmol/m²/s in a 4′×4′ space makes it suitable for full-cycle growth—from vegetative through flowering—without sacrificing efficiency or light uniformity.
Built with white and deep-red diodes, this light delivers a balanced spectrum optimized for photosynthesis and flowering response. Its durable construction and modular form factor make it easy to install in grow tents or vertical rack systems with limited headroom.
In short, the MH Lumyre 480 provides commercial-level performance in a compact, energy-efficient design—ideal for growers seeking reliable, full-spectrum lighting for a 4′×4′ grow space.
-
LEDs: Multi-bar high-intensity white + 660 nm deep red diodes in the bar-layout
-
PPFD: ~750 µmol/m²/s
-
PPF: ~1,250 µmol/s
-
PAR efficacy: ~2.6 µmol/j
-
Wattage draw: 480 W
-
Coverage area: 4′×4′
-
Light distance: ~12″
-
Dimensions: 44″ × 44″ × 2.3″
-
Weight: 24 lbs
-
Warranty: 5-year warranty
Vivosun VSFD6500 LED Grow Light
The Vivosun Detachable LED Grow Light is a modular, bar-style fixture designed for high-output performance in a 4′×4′ flowering footprint. Drawing approximately 480 W, it delivers a reported efficacy of ~2.8 µmol/J and full-spectrum output (380–780 nm), including UVA, 660 nm deep red, and 730 nm far-red—ideal for full-cycle growth.
Its detachable light bars make installation, transport, and storage more convenient, while the slim, low-profile design with a built-in driver improves placement flexibility in tents or racks. The fixture includes a dimming knob with four intensity presets (0–25%, 50%, 75%, 100%) and supports daisy-chaining and smart control via app integration—allowing easy scaling and automation for larger or future-proof grow setups.
The layout ensures even light distribution with minimal hotspots, and its output suits high-yield cultivation when canopy height and thermal management are properly balanced. The IP65 rating adds durability for use in humid environments.
In summary, the Vivosun Detachable LED offers power, adaptability, and upgrade potential—making it a strong option for growers looking to maximize efficiency and coverage in a 4′×4′ indoor grow space.
Amazon link (Discount code: MRGROW15)
Vivosun website link (Discount code: MRGROW15)
-
LEDs: Full-spectrum diodes covering 380–780 nm
-
PPFD: N/A
-
PPF: N/A
-
PAR efficacy: ~2.8 µmol/j
-
Wattage draw: 450 W
-
Coverage area: 4′×4′
-
Light distance: 14-24″
-
Dimensions: 39″ × 29.6″ × 2.8″
-
Weight: 17.46 lbs
-
Warranty: 5-year manufacturer warranty listed
AC Infinity IONFRAME EVO6 LED Grow Light
The IONFRAME EVO6 from AC Infinity is a premium 500W full-spectrum LED grow light built for high-performance indoor cultivation. Engineered with Samsung LM301H EVO diodes, it delivers top-tier efficiency at 3.14 µmol/J and a PPF of approximately 1,991 µmol/s, making it ideal for 4′ × 4′ flowering coverage.
Its bar-style layout features algorithmic diode spacing, ensuring uniform canopy distribution and deep light penetration. Passive cooling and a removable driver help maintain thermal efficiency—important for enclosed grow environments. Smart features include a digital controller with 10 brightness levels, sunrise/sunset scheduling, WiFi/app integration via the UIS™ platform, and daisy-chain capability for up to 80 units.
The EVO6 excels in environments where high-intensity light and automation are priorities. Its flexibility in dimming and mounting height allows growers to tailor intensity throughout the plant’s lifecycle. With its IP65 rating, rugged build, and advanced control system, it’s well-suited for both tent growers and mid-scale setups.
In summary: the EVO6 brings efficiency, smart automation, and serious output into a 4′ × 4′ footprint—making it one of the most capable options in the premium grow light category.
Amazon link (Discount code: MRGROWIT15)
AC Infinity website link (Discount code: MRGROWIT15)
Happy Hydro website link
-
LEDs: Samsung LM301H EVO diodes
-
PPFD: ~1,991 µmol/m²/s
-
PPF: N/A
-
PAR efficacy: ~3.14 µmol/j
-
Wattage draw: 500 W
-
Coverage area: 4′ × 4′; up to ~5′×5′
-
Light distance: 12-18″
-
Dimensions: 32.28″ × 32.67″ × 3.38″
-
Weight: 26.8 lbs
-
Warranty: 2-year warranty
GrowPros HM660 LED Grow Light
The GrowPros HM660 is a high-output, full-spectrum LED grow light designed for serious indoor cultivators. Drawing around 660W (and up to 720W in boost mode), it delivers exceptional output—up to 1,820 µmol/s with an efficiency of 2.6–2.7 µmol/J.
This fixture features over 3,500 diodes, including deep-red (~600 nm) elements, providing a balanced spectrum for both vegetative and flowering stages. The foldable, bar-style design ensures even light distribution with minimal hot spots, while the passive-cooling system keeps heat low—ideal for enclosed tents or grow rooms.
Smart features include 0–10 V dimming, daisy-chain capability, and TrolMaster compatibility, offering flexibility and automation potential for scaled or multi-stage operations.
Rated for a 4′ × 4′ flowering footprint, the HM660 delivers more than enough intensity for dense canopies and full-cycle grows. Its efficiency and robust construction make it a strong contender for growers seeking commercial-grade performance at a midrange wattage.
In summary: the HM660 is a versatile, high-powered fixture with excellent spectrum, output, and controllability—well-suited for 4′ × 4′ setups where performance, reliability, and coverage matter.
Happy Hydro website link
LED Grow Lights Depot link
-
LEDs: 3,500 diodes
-
PPFD: 1,188 µmol/m²/s
-
PPF: 1,820 µmol/s
-
PAR efficacy: 2.6–2.7 µmol/j
-
Wattage draw: 660W
-
Coverage area: 4′×4′ ; Max rated ~5′×5′
-
Light distance: 12-24″
-
Dimensions: 46.85″ × 42.8″ × 3″
-
Weight: 30 lbs
-
Warranty: 7-year limited warranty according to spec sheet
Grand Master LEDs Tarantula Torch 850 HPS/MH LED Grow Light
The Tarantula Torch 850 HPS/MH is a professional-grade, full-spectrum LED grow light engineered for large indoor grow areas, with a flowering footprint rated up to 4′ × 4′ or 5′ × 5′. Drawing substantial power, this fixture delivers strong photon output and a customizable spectrum—featuring dual-spectrum modes (HPS-red and MH-blue) and 12 programmable presets, allowing fine-tuned control for every stage of plant growth.
Its diode array includes LEDSTAR white, 660 nm red, and 450 nm blue chips, offering both intensity and spectrum flexibility. With knob dimming, spectrum switching, and a robust Inventronics driver, the Torch 850 is designed for growers who want to push yields in full-cycle grows. Its IP66 rating, foldable frame, and rugged build make it ideal for humid environments and tight installation conditions.
While it’s a high-powered light intended for larger grow areas, its extensive feature set and strong output give it “head-room” capacity in a 4′ × 4′ tent. You’ll want to dial in dimming and manage canopy distance carefully, but the reward is high efficiency, control, and adaptability—especially for growers running dense canopies or CO₂ enrichment.
Bottom line: Premium power, spectrum control, and flexibility for serious 4×4 growers.
Grand Master LEDs website link (Discount code: MRGROWIT)
-
LEDs: LEDSTAR white + 660 nm red + 450 nm blue diodes
-
PPFD: N/A
-
PPF: ~2,134 µmol/s
-
PAR efficacy: ~2.51 µmol/j
-
Wattage draw: 850 W
-
Coverage area: 4′×4′ or ~5′×5′
-
Light distance: 12-30″
-
Dimensions: 43.86″ × 43.66″ × 3.64″
-
Weight: 27.23 lbs
-
Warranty: 5-year manufacturer warranty
Grand Master LEDs Tarantula Tent Ultimate 4×4 V2 LED Grow Light
The Tarantula Tent Ultimate 4×4 V2 is a high-performance, full-spectrum LED grow light purpose-built for 4′×4′ flowering coverage. It features Samsung LM301H EVO Mint White and LEDESTAR diodes arranged in an 8-bar layout, delivering uniform canopy penetration and a system efficacy of around 2.77 µmol/J.
Engineered for serious indoor growers, the V2 is IP66-rated for water resistance, includes knob dimming (0–100%), and supports RJ14 controller integration for automated light management. The design emphasizes uniformity and minimal hot spots, ideal for even light distribution across your grow tent.
This fixture is optimized for a full 4′×4′ footprint, making it ideal for growers looking to maximize yield and efficiency without stepping into commercial-scale systems. The full-spectrum output supports all stages of plant growth—seedling, veg, and bloom—without needing supplemental lighting.
In short, the Tarantula Tent Ultimate 4×4 V2 offers top-tier diodes, durable construction, and smart compatibility, making it a standout option for growers who want maximum performance, even coverage, and build quality that lasts across multiple grow cycles.
Grand Master LEDs USA website link (Discount code: MRGROWIT)
Grand Master LEDs Canada website link (Discount code: MRGROWIT)
-
LEDs: Samsung LM301H EVO Mint White + LEDESTAR diodes
-
PPFD: N/A
-
PPF: 2,105 µmol/s
-
PAR efficacy: 2.77 µmol/J
-
Wattage draw: 750 W
-
Coverage area: 4′×4′
-
Light distance: ~12-18″
-
Dimensions: 44.88″ × 44.88″
-
Weight: 37.15 lbs
-
Warranty: 5-year manufacturer warranty
![]()



