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PhytoMAX 400 LED Grow Lights

Quick Overview

The PhytoMAX 400 has been discontinued, replaced by the all-new PhytoMAX-2 400 with 50% more light for the same power draw!

The patent pending PhytoMAX 400 is a compact and powerful 425 watt LED grow light that will outperform any other equal-wattage LED grow light on the market. Do a side-by-side for yourself with our 90-day no hassle return policy!

Availability: Discontinued




With PhytoMAX we have delivered the most powerful and reliable, truly full-spectrum (365-750nm, UV to NIR) LED plant growing lights! The new custom housing is designed to better distribute light and dissipate heat, and the PhytoMAX 400 LED growing lights use the highest-quality, latest-technology, top-bin LEDs to deliver Black Dog LED's proprietary full-cycle Phyto-Genesis Spectrum®.

  • Replaces 600 Watts of HID (HPS/MH)
    • Producing a superior yield with higher quality flowers
    • Saves on electrical, cooling, reflector and bulb replacement costs
  • 182 High-Output 5-watt LEDs
    • High light intensity crucial for canopy penetration
    • Even coverage eliminates leaf burn and hot spots
  • 425 True Watts - 910 LED Watts
    • The PhytoMAX 400 will outperform any other equal-wattage LED grow light on the market!
  • Largest Proven Footprint of any LED Grow Light
    • Research-proven, large, evenly covered footprint (no hot spots)
    • Proven by independent spectroradiometer testing
  • Phyto-Genesis Spectrum®
    • The most efficient spectrum for growing plants, based on over 5 years of research and testing, outperforming HPS, MH, CMH (LEC), induction, fluorescent, and "white" LED growing lights in equal wattage tests.
    • One ideal spectrum for both vegetative and flowering stages eliminates growth stalling associated with spectrum changes such as switching from MH to HPS
    • True full spectrum ranging from UVA to NIR (365-750nm) goes Beyond PAR™ for ultimate flowering and vegetative plant cycles
    • Targets not only photosynthetic (chlorophyll / carotenoid) peaks but also:
      • Increases THC, CBD, terpenes, flavonoids, antioxidants / vitamins and pigmentation with UV light
      • Includes near infrared (NIR) light to boost photosynthetic efficiency through the Emerson Effect
  • Commercial Grade
    • ETL certified to UL safety standards
    • The best active heat management in the industry, crucial to maximizing LED life, efficiency and spectrum stability
    • Largest heat sink among LED grow lights for superior cooling and increased LED life
    • Ultra efficient, long-life fans: 70,000+ hour rated lifespan
  • Fast, Proven ROI
    • With a 6-12 month average return on investment, PhytoMAX LED growing lights are the best value per watt of any commercial LED grow light
  • Contains no Highly Toxic Mercury
    • Unlike all HID (HPS, MH, CMH / LEC) and fluorescent / induction bulbs
    • No hazardous waste disposal fees
  • Metal adjustable ratcheting 8-foot2.4-meter light hangers
  • Limited Lifetime Warranty
    • The industry's best warranty
Once you grow with PhytoMAX LED growing lights, you'll understand why people say HID is a thing of the past!
PhytoMAX 400
Vegetative Footprint
5 feet (152 cm)152 cm (5 feet)
Flowering Footprint
3.5 feet (107 cm)107 cm (3.5 feet)
Hanging Height
PhytoMAX 400
20 in. (51 cm)51 cm (20 in.)
29 in. (74 cm)74 cm (29 in.)
Hanging height above average top of plant canopy to achieve the maximum recommended footprint size.

For more in-depth information on PhytoMAX lights, check out the PhytoMAX Knowledge Center.

PhytoMAX 400 LED Grow Lights Specifications

Units Imperial
Max. Flowering Footprint 3.5' x 3.5'1.1 x 1.1 meters
Max. Vegetative Footprint 5' x 5'1.5 x 1.5 meters
Shipping Size 24" x 24" x 12"61 x 61 x 30 cm
Product Dimensions 15.75" x 15.75" x 5"40 x 40 x 11 cm
Shipping Weight (lb.) 27.0000
Weight 24lb (10.9kg)10.9kg (24lb.)
True Wattage 425w
LED Wattage 910w
Certifications ETL, CE, FCC, RoHS
Mean Time Between Failure > 50,000 hours
Number of LEDs 182
Amp Draw 3.54A~1.77A (@ 120/240v)1.85A (@ 230V)
Cord Length 8 feet2.4 meters
Voltage AC 100V~250V
Work Frequency 50~60 Hz
Power Factor > 0.98
Operation Temperature Range -4~104 °F-20~40 °C
BTU 1449
Fans Expected Life 70,000 hours
1,349.00 Out of stock