BlackDog PhytoMAX-3 20SH Grow Lights

In stock
Black Dog
Quick Overview

The PhytoMAX-3 20SH LED grow lights, with 1020 watts and 2185 μmol/s photobiological photon flux, are ideal for large vegetative or flowering spaces, providing 3.5-6+ pounds of dried, cured, and trimmed flower per light, and offering high PAR levels and yields.


At 1020 actual watts and 2185 μmol/s total photobiological photon flux (PBF), the patent-pending PhytoMAX-3 20SH LED grow lights are ideal for large vegetative or flowering spaces, as a production light it delivers with 3.5 to 6+ poundsof dried, cured, and trimmed flower per light.

With PhytoMAX-3, we have delivered the most powerful and reliable, truly full-spectrum (350-750nm, UV to NIR) plant grow lights! The PhytoMAX-3 20SH 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!

Maximum Flowering Space - 8' x 8'
Yields 3.5 to 6+ pounds per light!

Better Coverage

FootprintMinimum AreaMaximum Area


5.5' x 5.5' (30.25 ft2)

10' x 10' (100 ft2)


4.5' x 4.5' (20.25 ft2)

8' x 8' (64 ft2)

Photon Flux Efficacy 2.14 μmol/J PBAR (280-800nm)
Total Photon Flux 2185 μmol/s PBAR


Bigger Flowering Footprint

PhytoMAX-3 20S has a larger area of coverage with up to 8' x 8' per light.


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

More Powerful Spectrum

3.3% ultraviolet (< 400nm) and 20% violet (400 - 450nm) light provides better canopy penetration; Photon Flux Efficacy (PBAR 280 - 800nm): 2.14 μmol/J

Bigger Yields

3.5 to 6+ pounds per light

(Depending on strain, environment and growing skills)

Standard Power Inlet

IEC standard power inlet, allowing cords to be sourced worldwide.


Don’t be fooled by the imitations with their limitations.
Many lighting companies claim to offer UV and IR in their spectrum. The fact of the matter is the vast majority of the grow
lights on the market have completely insignificant UV output.
Go BEYOND PARTM with our Phyto-Genesis spectrum. Our cannabis targeted spectrum with 3.4% UV and 4.9% IR give your plants increased cannabinoid content (+26%) including minor cannabinoids like CBC, CBN, THCv, and Delta 8. Our spectrum also gives you increased yields at more than double the industry standard, with 80 to over 120 grams per square foot.

PhytoMAX-3 20SH Specifications

Photon Flux (μmol/s)
More Information
Dimming0-10V, 15% - 100% - See dimming cords here (opens in new tab)
Product Dimensions19" x 19" x 4.5"
Weight42lb (19kg)
True Wattage1020w
CertificationsCE, FCC, RoHS
Mean Time Between Failure> 70,000 hours
Number of LEDs560
Amp Draw10.20A @ 100V
8.5A @ 120V
4.9A @ 208V
4.25A @ 240V
Standard Power Cord Length8 feet
Power Cord OptionsNEMA 5-15 or NEMA 6-15
AC Voltage RangeAC 100V~240V (50 / 60 Hz)
Power Factor> 0.98
Operation Temperature Range-4~104 °F
Fans Expected Life> 70,000 hours


Photobiological Photon Flux Density (PBFD, 280-800nm)

PBFD Average
(μmol/m2/s, 280-800nm)
Coverage Area
100218.23 ft2
(14.77 x 14.77 ft)
200109.11 ft2
(10.45 x 10.45 ft)
30072.74 ft2
(8.53 x 8.53 ft)
40054.56 ft2
(7.39 x 7.39 ft)
50043.65 ft2
(6.61 x 6.61 ft)
60036.37 ft2
(6.03 x 6.03 ft)
70031.18 ft2
(5.58 x 5.58 ft)
80027.28 ft2
(5.22 x 5.22 ft)
90024.25 ft2
(4.92 x 4.92 ft)
100021.82 ft2
(4.67 x 4.67 ft)
110019.84 ft2
(4.45 x 4.45 ft)
120018.19 ft2
(4.26 x 4.26 ft)
130016.79 ft2
(4.10 x 4.10 ft)
140015.59 ft2
(3.95 x 3.95 ft)
150014.55 ft2
(3.81 x 3.81 ft)
160013.64 ft2
(3.69 x 3.69 ft)