Black Dog LED PhytoMAX-4 20S 1250W Commercial LED Grow Light | High-Intensity Series

Key Specs: 1250W | 2.14 µmol/J | 2,656–2,657 µmol/s PBAR | 4,263 BTU/hr | 45 lbs | 5-Year Limited Warranty

Kill Variance. Print Yield.

Legacy HPS infrastructure does not fail loudly — it fails slowly, invisibly, and at your expense. Lamp lumen depreciation begins the moment a bulb fires, meaning every harvest cycle after the first is running on degraded output you cannot see and cannot correct without manual intervention. Ballast drift, inconsistent spectral output, and thermal loading that overwhelms HVAC setpoints compound into canopy variance that shows up as weight inconsistency, potency deviation, and rejected batches. The enemy is not a single failure point — it is a system of passive degradation that charges you for every hour it runs.

After deployment of the PhytoMAX-4 20S, the facility operates on a different logic. Canopy density is uniform because photon output is consistent from day one through year eight. Scheduling is automated through 0–10V dimming integration, eliminating manual adjustment windows and the labor overhead that comes with them. Lamp replacement cycles disappear from the maintenance calendar entirely. HVAC loads stabilize because the fixture's thermal output is predictable and rated — not a variable that shifts with bulb age. The facility runs tighter, and that tightness compounds into yield consistency that can be documented, reported, and replicated.

The mechanism behind that outcome is the Phyto-Genesis Spectrum® — a full-range spectral architecture spanning 350–750nm (Beyond PAR™) that includes 3% UV content matched to natural sunlight for secondary metabolite expression, alongside targeted deep red, far-red, and broad white channels engineered for complete photosynthetic and photomorphogenic coverage. The 560-diode array delivers 2,656–2,657 µmol/s of photon output at 2.14 µmol/J efficacy from a 1,250-watt draw across 100–277V input, with a glass lens rated at greater than 99.5% transmissivity ensuring that output reaches the canopy without optical loss. Dimming is continuous from 15–100% via 0–10V signal, enabling integration with any commercial lighting controller. In practical terms, the PhytoMAX-4 20S delivers 2,656–2,657 µmol/s across its rated coverage footprint at 1,250 watts with a 4,263 BTU/hr thermal output and a rated lifespan exceeding 75,000 hours.

Where This Belongs (and Doesn't)

Not recommended for circuits under ~10.42A @120V or ~5.21A @240V per fixture, or unsealed rooms lacking HVAC capacity for expected thermal load.

Minimum infrastructure requirement: Dedicated 20A circuit per fixture at 120V, or appropriately rated circuit at higher voltage. HVAC system must be sized to manage 4,263 BTU/hr per unit. Verify electrical capacity before ordering.

Infrastructure Note: At 45 lbs per fixture, structural mounting points must be rated for dynamic load with appropriate safety factor. Multi-unit deployments require electrical load calculation by a licensed electrician prior to installation. HVAC capacity planning must account for cumulative BTU output across all installed units.

How It Works

The PhytoMAX-4 20S is built around the Phyto-Genesis Spectrum® — a proprietary spectral architecture that spans 350–750nm, extending beyond conventional PAR boundaries into UV and near-infrared wavelengths that drive secondary metabolite production and photomorphogenic response. The spectrum includes 3% UV content calibrated to match natural sunlight levels, which Black Dog LED's internal lab testing associates with a 39% increase in cannabinoid content and elevated terpene production relative to standard broad-spectrum LED output. The 560-diode array is driven at 1,250 watts across a universal input voltage range of 100–277V (20SC) or 100–250V (20SP), producing 2,656–2,657 µmol/s of photon output — a figure verified across two independent source measurements and preserved here as a dual-value data point. Optical delivery is managed through a glass lens rated at greater than 99.5% transmissivity, ensuring minimal photon loss between diode and canopy surface. Dimming is executed via 0–10V analog signal across a continuous range of 15–100%, enabling precise DLI management across all growth stages without fixture cycling. The power factor is rated at 0.99, and mean time between failures (MTBF) exceeds 70,000 hours, with a total rated lifespan greater than 75,000 hours — equivalent to more than 8.5 years of continuous 24/7 operation. In practical terms, the PhytoMAX-4 20S delivers 2,656–2,657 µmol/s at 2.14 µmol/J efficacy from a 1,250-watt draw, with a 4,263 BTU/hr thermal output and a 0.99 power factor across its full operational lifespan.

Pick Your Configuration

System Integration

To operate this platform at peak efficiency, verify your ecosystem matches these requirements:

• Lighting Controller: 0–10V analog dimming signal required for automated scheduling and DLI management. Compatible with any commercial lighting controller outputting a standard 0–10V signal. Dimming range is 15–100%; fixture does not dim below 15%.
• Electrical Infrastructure: 20SC accepts 100–277V input; 20SP accepts 100–250V input. Circuit sizing must be calculated by a licensed electrician based on your facility's voltage and the fixture's 1,250-watt draw. Do not share circuits across multiple fixtures without verified load calculations.
• Power Cord / Connection: 20SC ships with a locking, water-tight power cord. 20SP ships with an IEC power cord. Verify your panel and receptacle configuration matches the variant ordered before installation.
• HVAC Capacity: Each unit produces 4,263 BTU/hr. Multi-unit deployments require cumulative HVAC load planning. Sealed room environments must account for total fixture thermal output in cooling system design.
• Mounting Structure: Fixture weight is 45 lbs. Mounting points must be rated for this load with an appropriate safety factor for dynamic loading. Confirm rafter, rail, or truss capacity before installation. Physical dimensions are not specified in current source data — contact Black Dog LED or Cannafull Spectrum Solutions for current dimensional drawings before finalizing mounting design.

Facility Integration Data

The following ROI model and comparison data are provided to support fleet-level procurement decisions. Figures are based on published specifications and standard HPS operating assumptions; verify against your facility's actual utility rates and operational parameters.

Operator Field Note

• Weight / Structural: Each PhytoMAX-4 20S unit weighs 45 lbs. Mounting hardware, rails, and overhead structural members must be rated for this load with a minimum 4:1 safety factor for dynamic loading. Do not suspend from drywall anchors or unrated ceiling grid systems.
• Electrical / Amperage: At 1,250W, amperage draw varies by input voltage. At 120V: approximately 10.4A. At 240V: approximately 5.2A. At 277V (20SC only): approximately 4.5A. Always size circuit breakers and wire gauge to NEC requirements with appropriate derating for continuous loads (typically 80% of breaker rating). Consult a licensed electrician for multi-unit circuit design.
• UV Exposure Warning: The Phyto-Genesis Spectrum® includes UV output (3% UV content, 350nm+). Do not operate the fixture without appropriate eye and skin protection when performing maintenance or canopy inspection with lights on. UV exposure at close range poses an ocular hazard.
• Environmental Setpoints: The 20SC variant is rated for greenhouse and high-humidity environments with its locking, water-tight power cord. The 20SP is rated for sealed indoor environments only. Verify ambient temperature and humidity operating ranges with Black Dog LED before deploying in environments outside standard sealed room conditions.
• Dimensions: Physical dimensions for the 20S model are not specified in current manufacturer source data. Contact Black Dog LED directly or reach Cannafull Spectrum Solutions at (888) 378-0017 to obtain current dimensional drawings before finalizing fixture spacing, mounting height, and room layout design.
• Power Factor: Rated at 0.99. Facilities with power factor penalty clauses in their utility contracts will see minimal reactive power charges from this fixture.

Shipping & Logistics

• Origin: Ships from Cannafull Spectrum Solutions' authorized distribution point. Black Dog LED products are designed and assembled in Colorado, USA.
• Processing: Orders are processed within 1–2 business days of receipt. Large fleet orders may require additional lead time — contact us before ordering to confirm availability and estimated ship date.
• Damage: Inspect all shipments within 48 hours of delivery. Document any damage with photographs and contact Cannafull Spectrum Solutions at (888) 378-0017 or sales@cannafullspec.com within 48 hours of receipt. Claims submitted after this window may not be eligible for carrier damage recovery.
• Returns: 30-day return window from delivery date. A Return Authorization (RA) number is required before any return shipment. Contact (888) 378-0017 or sales@cannafullspec.com to initiate.
• Restocking Fee: Returns of non-defective items are subject to a restocking fee of up to 25% per our Return Policy. Review full terms at cannafullspec.com/pages/return-policy before ordering.

Questions? (888) 378-0017 or sales@cannafullspec.com

What's in the Box

• 1x Black Dog LED PhytoMAX-4 20S fixture (20SC or 20SP per variant ordered)
• Power cord — locking, water-tight (20SC) or IEC power cord (20SP)

Note: Box contents are based on available manufacturer data. Verify complete contents upon receipt. Contact Cannafull Spectrum Solutions at (888) 378-0017 if any components are missing or damaged.

Regional Compliance & Deployment Notes

Commonly deployed in sealed commercial cultivation facilities across the United States. Installation, HVAC sizing, and electrical requirements vary by jurisdiction; always verify with local code.