Skip to content
Free Shipping on most orders over $175 | Sales Tax in NJ only
Free Shipping on most orders over $175 | Sales Tax in NJ only
Black Dog LED PhytoMAX-4 20S Grow Light LED light Black Dog LED

Black Dog LED PhytoMAX-4 20S Grow Light

by Black Dog LED
12% discount + Mfg Rebate inside
$2,179.00 - $2,199.00
$2,179.00
$2,179.00 - $2,199.00
$2,179.00

Get 12% off with BD12

MFG Rebates up to $160 - See Description

🌿 Free shipping on $175+ orders in the USA

🌿 Ships to Canada, AK & HI. Call us for info

🌿 Price match guarantee, details here

Energy Rebates & Bulk Pricing Available

SAVE BIG on your grow setup! Email or call us at (973) 206-7590. For rebates eligibility, click here.

Cash Payment Discounts & Financing Options

Get an additional 3% off when you pay by ACH, Money, or Zelle. Select your option at check out.

We accept all major credit cards, crypto and Paypal 0% credit plans. More details here.

Full Manufacturer’s Warranty

You buy it, we back it! Your purchase is fully covered with a manufacturer’s warranty. More details here.

Get to Know the Black Dog PhytoMAX-4 20S LED Grow Light

The Black Dog LED PhytoMAX-4 20S delivers 2657 µmol/s PPF with 1250W of power, ensuring maximum light intensity and efficiency for high-yield cultivation. Designed with the proprietary Phyto-Genesis Spectrum, this full-spectrum LED grow light optimizes photosynthesis, terpene production, and plant structure. Whether you’re managing a commercial grow or an advanced indoor setup, the 20S delivers superior canopy penetration, even light distribution, and industry-leading performance.

Is the PhytoMAX-4 20S Energy-Efficient?

At 2.1 µmol/J, the 20S operates with higher efficiency than traditional HID fixtures, offering 30-40% HVAC savings while providing higher PPFD levels for maximum yields. With dimmable control and optimized cooling, it ensures consistent performance with lower energy costs, making it an excellent investment for serious cultivators.

Features

  • Optimized yield per watt to maximize harvest quantity and quality while enhancing terpenes, pigments, and cannabinoid production.
  • Dimmable from 15% to 100% with industry-standard 0-10V dimming controllers for precision light adjustment.
  • Advanced active cooling system ensures efficiency and extends LED lifespan with multiple redundant fans.
  • Specialty UV and violet LEDs designed for superior plant growth and long-term performance.
  • Over a decade of expertise from one of the longest-running LED grow light manufacturers, delivering proven reliability.

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.

SP versus SC Models

The only difference between the SP and SC models is the power cord and the voltage it can handle.

What's Included?

  • PhytoMAX-4 20S LED Light Fixture
  • Pair of V-Hooks
  • Ratcheting Rope Hangers

Who should use this LED grow light?

  • Commercial cultivators maximizing canopy penetration and yield.
  • Large-scale growers covering big areas with 1250W of power.
  • Experienced home growers seeking top-tier bud quality.
  • Cannabis breeders optimizing light spectrum for specific traits.
  • HPS growers upgrading for better efficiency and light control.

Best applications

  • Flowering rooms needing a balanced spectrum for dense buds.
  • Indoor cannabis farms maximizing yield per watt.
  • Vertical grows benefiting from compact plant structure.
  • Controlled environment ag where spectrum precision matters.
  • Research and testing requiring consistent, high-quality light.

Why Shop with Grow Light Central?

“There’s a crapload of equipment providers out there. What makes Grow Light Central so special?”

“There’s a crapload of equipment providers out there. What makes Grow Light Central so special?”

Grow Light Central is a cannabis equipment solution provider connecting you to 100+ brands and 60+ suppliers trusted and used in the best cannabis facilies across the country.

With years of cannabis growing experience, Anthony, the owner and operator, personally ensures every order is handled right. No passing you off, no runaround, just the expert service and advice you deserve.

Specifications

Dimming: 0-10V, adjustable from 15-100%

Dimensions: 19" x 19" x 4.5"

Weight: 45 lbs

Power Consumption: 1250W

Certifications: UL 1598, UL 8800, ETL, CE, FCC, RoHS

Mean Time Before Failure (MTBF): > 70,000 hours

Number of LEDs: 560

Amp Draw:

12.5A @ 100V

10.42A @ 120V

6.01A @ 208V

5.43A @ 230V

5.21A @ 240V

4.51A @ 277V (SC model only)

3.6A @ 347V (SX model only)

Power Cord Options:

Length: 8 ft

Plug Types: 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

Operating Ambient Temperature: -4°F to 104°F

BTU Output: 4263

Fan Life Expectancy: > 70,000 hours

Warranty: 5 Years

FAQs

How many watts do I need for my grow space?

The wattage depends on the size of your grow tent or room. A general guideline is 30-50 watts per square foot for high-light plants like cannabis. For example, a 2x2 ft area may need 100-200W, while a 4x4 ft area may require 400-600W for optimal coverage.

What is the difference between full-spectrum and red/blue LED grow lights?

Full-spectrum LED lights mimic natural sunlight, providing a balanced mix of blue (for vegetative growth) and red (for flowering and fruiting) light. Red/blue LED lights focus on specific wavelengths but may not support plants as effectively as full-spectrum lights.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)