Flower Footprint: 8' x 8'
Black Dog LED PhytoMAX-3 20SH Full Spectrum LED Grow Light
Black Dog’s PhytoMAX-3 20SH Full Spectrum LED Grow Light is a powerful full-spectrum (350-750nm, UV to NIR) LED grow light. The PhytoMAX-3 20SH is manufactured using the highest-quality top-bin LEDs to deliver Black Dog’s innovative full-cycle Phyto-Genesis Spectrum uniformly over the light’s entire footprint with spectacular PAR levels, excellent canopy penetration, and increased yields! This powerhouse of a light is capable of producing 3.5 to 6+ pounds of dried, cured, and trimmed flower per light.
Maximum Flowering Space - 8' x 8'
Up to 6+ pounds per light
The Latest Technology
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Increased Yields: Higher yields with lower energy costs means more profit for you.
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Plant Specific Spectrum: The Phyto-Genesis Spectrum helps increase terpene production with a truly complete spectrum.
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Double The Coverage: The PhytoMAX-3's flowering footprint is double the industry standard, so you can cover more area with fewer fixtures.
Massive Flowering Footprint
The PhytoMAX-3 20SH has a massive flowering coverage area of up to 8' x 8' per light.
Dimmable
The 20SH grow light is dimmable from 15% - 100% with industry-standard 0-10V dimming controllers.
Powerful Spectrum
Delivering 3.3% ultraviolet (< 400nm) and 20% violet (400 - 450nm) light provides better canopy penetration; Photon Flux Efficacy (PBAR 280 - 800nm): 2.14 μmol/J
Scale-Tipping Yields
This incredible light is capable of producing 3.5 - 6+ pounds per light (depending on strain, environment and growing skills).
Standard Power Inlet
The PhytoMAX 20SH is equipped with an IEC standard power inlet, allowing cords to be sourced worldwide.
Better Coverage
Photon Flux Efficacy 2.14 μmol/J PBAR (280-800nm)
Total Photon Flux 2185 μmol/s PBAR
- Minimum Vegetative Area: 5.5' x 5.5' (30.25 ft2)
- Maximum Vegetative Area: 10' x 10' (100 ft2)
- Minimum Flower Area: 4.5' x 4.5' (20.25 ft2)
- Maximum Flower Area: 8' x 8.' (64 ft2)
Commercial-Grade Quality
The PhytoMAX-3 SH home series of grow lights are identical in every way to the PhytoMAX-3 SC and SP commercial and professional lights, except that they do not include the ETL certification sticker which is required for commercial grows and they utilize a standard IEC power cord for worldwide use. This means they have the same amazing stats as the other lights but are a more affordable option for the home grower.
Black Dog LED's Phyto-Genesis Spectrum
Many brands include UV and IR in their grow light’s spectrum, but the majority have insignificant UV output, unlike the PhytoMAX-3 20SH. Black Dog’s Phyto-Genesis spectrum delivers 3.4% UV and 4.9% IR to increase the wanted compounds in your plants (+26%) including minor compounds like CBC, CBN, Delta 8, and others. PhytoMAX’s spectrum will also increase yields more than double the industry standard, with 80 to over 120 grams per square foot.
Photon Flux (μmol/s)

AMP Draw
- 10.20A @ 100V
- 8.5A @ 120V
- 4.9A @ 208V
- 4.25A @ 240V
Product Details
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Dimming 0-10V, 15% - 100%
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Product Dimensions 19" x 19" x 4.5"
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Weight 42lb (19kg)
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True Wattage 1020w
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Certifications CE, FCC, RoHS
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Mean Time Between Failure > 70,000 hours
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Number of LEDs 560
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Standard Power Cord Length 8 feet
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Power Cord Options NEMA 5-15, NEMA 6-15
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AC Voltage Range AC 100V~240V (50 / 60 Hz)
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Power Factor > 0.98
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Operation Temperature Range -4~104 °F
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BTU 3478
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Fans Expected Life > 70,000 hours
Photobiological Photon Flux Density (PBPFD, 280-800nm)
PhytoMAX-3 20SH Specifications
Veg Footprint |
10' x 10' |
Flower Footprint |
8' x 8' |
Power |
1020 watts |
Spectrum |
Full |
Light Output |
2185 μmol/s |
Dimensions |
19" x 19" x 4.5" |
Weight |
42 lbs |
Manufacturer's Warranty |
5 year limited |