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Black Dog LED PhytoMAX-3 4SP

Original price $784.00 - Original price $811.73
Original price
$784.00 - $811.73
Current price $784.00

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Black Dog just bested their best in terms of power with the brand new PhytoMAX-3 series.

The PhytoMAX-3 4S draws 205 watts and delivers 437 μmol/s total photobiological photon flux (PBF) making the series the most efficient LED grow lights on the market.

What that means for you is the largest coverage area on the market at 4.5 x 4.5 ft for Veg and 3.5 x 3.5 ft for Flower/Bloom and an even light across the footprint that penetrates deep below the canopy.

You can also expect to get +1.5 lbs or more of dried, cured and trimmed flower per light.

This is a truly full-spectrum (350-750nm, UV to NIR PBAR) LED plant grow light! The PhytoMAX-3 4S uses only the highest-quality, latest-technology, top-bin LEDs to deliver Black Dog LED's proprietary full-cycle Phyto-Genesis Spectrum® evenly over the entire footprint, with unprecedented PAR levels, canopy penetration and yields!

Recommended for full-cycle growth in spaces (and tents) from 2' x 2' to 3.5' x 3.5'

Your plants grow stronger and yield more.

With the larger coverage and higher yields, Black Dog lights pay for themselves within a year.

Black Dog PM-3 4S Quick Summary

  • Exceptionally Yields up to 1.5+lbs or more per light!
  • Daisy Chain Compatible - up to 20 amps on 1 outlet
  • 112 LEDs deep canopy penetration and even coverage
  • True Wattage is 205W
  • Maximum flowering space - 3.5' x 3.5' — largest usable coverage in the industry and grows more plants with one light
  • Dimmable from 15% to 100%
  • True full spectrum from UV to IR (280nm to 800nm). Ultraviolet - 3.4% UV (< 400nm)— perfectly tailored for plants' needs
  • Pays for itself within a year due to more output at lower cost plus higher and better yields
  • 5-year warranty and a 90-day return policy — removes purchasing risk

More Intense Light for Deeper Canopy Penetration

This fixture has 112 high-output 5-watt LEDs that deliver an intense light, which is necessary for deep canopy penetration. The light is delivered evenly throughout the coverage area, eliminating hot spots and leaf burn.

Highest Power LED Grow Light on the Market

The PhytoMAX-3 4SP At 205 actual watts and 437 μmol/s total photobiological photon flux (PBF), these grow lights are our most powerful grow lighting solution to date.

Largest Proven Footprint of any LED Grow Light

Independent spectroradiometer testing has proven that the PhytoMAX-3 4SP footprint is the largest on the market. At the same time, it achieves an evenly covered footprint, meaning no hot spots. You won't have to worry about leaf burn.

Industry's Best Heat Management Maximizes LED Life

This fixture is equipped with ultra-quiet fans that are rated for up to 70,000 hours of use and the largest heat sinks in the industry. Black Dog lights have the best active heat management of all LED lights.

Despite the insane power, this fixture only puts out 699 BTU, which is not much more than a 300 watt HPS system. Keeping heat down is vital for maximizing the lifespan of LED diodes and for spectrum stability.

Most Efficient Spectrum for Growing Plants

Over 6 years of research and testing has resulted in Black Dog's Phyto-Genesis Spectrum™. It is a true full spectrum, with light ranging from UVA and UVB to far IR. In numbers, it covers wavelengths from 280 nm to 800 nm giving the PM-3 series a significantly wider range on the color spectrum than most grow lights.

This spectrum is ideal for all stages of plant growth. Using one spectrum throughout the grow cycle eliminates the growth stalling that occurs whenever you change the light spectrum mid-grow, such as switching from MH to HPS bulbs.

The Phyto-Genesis Spectrum™ targets photosynthetic (chlorophyll/carotenoid) peaks and also increases production of essential oils via the UV-A light. The inclusion of infrared light helps boost photosynthetic efficiency (see Emerson Effect).

In equal-wattage tests, this spectrum outperforms HPS bulbs, standard MH bulbs, light-emitting ceramic MH bulbs, induction bulbs, fluorescent bulbs and "white" LEDs.

Moreover, the Phyto-Genesis Spectrum appears white to the human eye, which means you can easily monitor plant health. If you've ever grown below a traditional pinkish LED light, you know how hard it can be to see problems and address them in time.

Black Dog PhytoGenesis Spectrum

Fastest Return on Investment

PhytoMAX lights are the best value per watt among all commercial LED plant lights. They are proven to achieve an average return on investment of 6 to 12 months. This light pays for itself within a year.

Environmentally Friendly

This light does not contain the highly toxic mercury you find in all HID and fluorescent bulbs. This also means no fees for hazardous waste disposal.

Best Warranty in the Industry

Black Dog LEDs come with a 5-year warranty and a 90-day return policy. See the 'Delivery and Returns' tab above (above on desktop, below on mobile) for more details.

Jump back up to the top and click on "Add to Cart" to buy yours today.

The Black Dog PhytoMax-3 Series includes is available in a wide range of options including: the PM-3 24SP, PM-3 20SP, PM-3 16SP, PM-3 12SP, PM-3 8SP and the PM-3 2SP.

And for commercial facilities where certification tags are required please enquire about the Commercial Series - they're exactly the same as the Professional (P) but include Tags for about $20 extra.

Actual Wattage 205 watts
HID Equivalent 300 watts
LED Quantity 112
Voltage AC 100V ~ 277V
Amperage 2.05A @ 100V ~ 0.74A @ 277V
Spectrum full spectrum (280 to 800 nm); for all grow cycles
Coverage Area 4.5 x 4.5 ft for Veg and 3.5 x 3.5 ft for Flower/Bloom
Working Frequency 50~60 Hz
Working Temperature -4~104 °F
BTU 699
Power Factor > 0.98
Dimensions 15 x 15 x 4.5 inches
Product Weight 17 lbs.
Life Span > 70,000 hours
Certifications CE, FCC, RoHS
Package Includes
Manufacturer's Warranty 5-year warranty; 90 day return policy


Black Dog LED products are warranted against manufacturer defects to the original owner for 5 years from the date of original purchase. In the event of defective materials and/or workmanship, Black Dog LED, LLC, will repair or replace, at its option, the defective product within 45 days from receipt of the defective product for the first three years after purchase.

After three years and up to 5 years from the original date of purchase, the customer will be responsible for labor associated with repairs and Black Dog LED will be responsible for the cost of parts. After 5 years Black Dog LED will offer repair services or parts as long as parts are available; the cost of repairs and parts after 5 years are the sole responsibility of the customer.

Shipping of the defective product to Black Dog LED is the sole responsibility of the customer. Return shipping of the repaired light is covered by Black Dog LED up to $50 per incident for the first three years after purchase. In the first three years after purchase, if return shipping will exceed $50, the customer will be notified and are responsible for paying any amount of shipping over $50 prior to the product being shipped back to the customer. After three years, the customer is responsible for paying for return shipping prior to the product being shipped back to the customer.

The Warranty does not apply to damage resulting from improper care, housings that have been opened, misuse, or normal wear and tear, which includes but is not limited to 5% or less of LEDs not lighting, improper installation, and/or failure to provide reasonable and necessary maintenance, improperly packaging and shipping the light back to Black Dog LED, etc.


If you are unsatisfied with any Black Dog LED light, you can return it for a refund within 90 days from the original purchase date. A Return Merchandise Authorization (RMA) must be requested and the product shipped within 90 days of the original date of receipt.

Returns are limited to one (1) light per customer. All items must be returned in "as new" condition in the original packaging and include all accessories. Lights that have been broken, damaged, altered, or had the housing opened are not returnable. "Damaged" includes but is not limited to water damage and damage resulting from being dropped and/or incorrect electrical connection.

Returns will be charged a 15% restocking fee. Shipping charges are non-refundable. We recommend using a carrier that has tracking capabilities when sending returns. The customer assumes responsibility for return shipping fees, insuring the return shipment, and filing any necessary claims for damaged or lost returns.

- Free Shipping on all orders $175+ in the continental US and internationally.*
- 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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