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Black Dog LED PhytoMAX-4 20S Grow Light

Original price $2,179.00 - Original price $2,199.00
Original price
$2,179.00 - $2,199.00
Current price $2,179.00

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Black Dog LED PhytoMAX-4 20S Grow Light


Unparalleled Yield and Quality

The design of PhytoMAX-4 lights prioritizes both quality and quantity of harvest. Rather than aiming for the maximum photons per watt, the focus is on achieving the highest yield per watt and maximizing the production of terpenes, pigments, and cannabinoids.

Customer Support

Benefit from our extensive experience with thousands of different plant types. Our customer support is top-notch, offering assistance with lighting inquiries and gardening challenges. Whether you have 4 or 40,000 plants, we have the expertise to support your growth.


Dimmable from 15% - 100% with industry-standard 0-10V dimming controllers.

Reliable Active Cooling

PhytoMAX-4 increases efficiency and maximizes lifespan by actively cooling the LEDs. Cooler LEDs run more efficiently and have a longer lifespan, especially for the specialty UV and violet LEDs we use. While fans are a moving part, we've never had one fail in tens of thousands of lights over the past 13 years, plus our patented design includes multiple redundant fans. Even if one were to fail, your light would keep running just fine.

Designed and Assembled in Colorado

Our lights are built to last, utilizing only the best quality parts and perfecting the PhytoMAX design for over 8 years.

Hanging Hardware Included

A pair of V-hooks and ratcheting rope hangers are included with every light.

Custom Light Plans

Our light modeling software is custom and proprietary, allowing for guaranteed light intensity levels to be shown for every square inch of your growing area, including the cubic inch from top to bottom. With our expertise, we can recommend the perfect lighting for your specific growing needs, regardless of what you are cultivating.

Go BEYOND PAR with our Phyto-Genesis Spectrum®

Phyto-Genesis Spectrum

The Phyto-Genesis Spectrum has been finely-tuned to not just grow plants, but to grow more-compact, more-productive and higher-quality flowers, fruit and leaves. Unlike most LED grow lights that use white or white and red LEDs, we incorporate 8 different LED colors to target specific responses from the plants, known as photomorphogenesis.

Our spectrum triggers plants' hormonal response to different colors of light and the ratio of these colors to minimize stem growth while maximizing flower and fruit production. Compact, bushier plants are not only easier to work with but also maximize yield per square foot.

Units  Metric
Dimming 0-10V, 15-100%
Dimensions 48 x 48 x 11 cm
Weight 20.4kg
Power 1250 Watts
Certifications UL 1598, UL 8800, ETL, CE, FCC, RoHS
Mean Time Before Failure > 70,000 hours
Number of LEDs 560
Amp Draw 12.5 @ 100V
10.42 @ 120V
6.01 @ 208V
5.43 @ 230V
5.21 @ 240V
4.51 @ 277V (SC model only)
3.6 @ 347V (SX model only)
Included Power Cord Length 2.4 meters
Power Cord Options NEMA 5-15, NEMA 6-15, NEMA 7-15 (SC model only), Pigtails
AC Voltage Range SP Model: 100-250V (50 / 60 Hz)
SC Model: 100-277V (50 / 60 Hz)
SX Model (special order): 347V
Power Factor 0.99
Operation Ambient Temperature Range -20 to 40 °C
BTU 4263
Fans Expected Life > 70,000 hours
Warranty 5 Years

- Free Shipping on all orders $175+ in the continental US (some exclusions apply).
- In most cases tracking info will be provided via email within 24 hours of shipment.
- Easy Returns within 90 days of purchase.
- Please see our Shipping & Returns policy for more details.

Warranty Information
Black Dog LED purchases come with a limited lifetime warranty.

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