BlackDog PhytoMAX-3 20SP Grow Lights

In stock
Black Dog
Quick Overview

PhytoMAX-3 20SP LED grow lights provide a full spectrum of light so they are perfect for small commercial spaces or cloning areas. They are reliable and provide high PAR levels and canopy penetration, so they can produce high yields.



At 1020 actual watts and 2185 μmol/s total photobiological photon flux (PBF), the patented PhytoMAX-3 20SP LED grow lights are ideal for larger flowering spaces, delivering 3.5 to 6+ pounds of dried, cured, trimmed flower per light.

With PhytoMAX-3, we have delivered the most powerful and reliable, truly full-spectrum (350-750nm, UV to NIR PBAR) LED plant grow lights! The PhytoMAX-3 20SP 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 tents / areas from 4.5' x 4.5' to 8' x 8'
Yields 3.5 to 6+ pounds per light

Better Coverage

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

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)



Daisy Chain Compatible

Running multiple lights on one outlet means less infrastructure- up to 20 amps on one outlet.

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)



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 20SP Specifications

Photon Flux (μmol/s)
More Information
Dimming0-10V, 15% - 100%
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
3.68A @ 277V
Standard Power Cord Length8 feet
Power Cord OptionsNEMA 5-15, NEMA 6-15, Pigtails
AC Voltage RangeAC 100V~277V (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)