Black Dog LED PhytoMAX-4 2S 125W Commercial LED Grow Light | High-Intensity Series

Key Specs: 125W | 2.14 µmol/J | 266 µmol/s | 426 BTU/hr | 9 lbs | 5-Year Warranty

Kill Variance. Print Yield.

Legacy HPS infrastructure does not fail loudly — it fails incrementally. Lamp lumen depreciation begins the moment a bulb fires, and by the time output has degraded 20–30%, most facilities have already absorbed the yield loss without ever identifying the cause. Passive failure points compound the problem: ballasts running hot, reflectors accumulating particulate, manual dimming schedules that drift between operators. The result is a canopy that looks uniform but performs inconsistently — and a cost-per-gram that climbs quietly every cycle while the root cause stays invisible in the maintenance log.

After deployment of the PhytoMAX-4 2S, the facility operates on a different set of rules. Every fixture in the array delivers the same photon output on day one as it does in year three. Scheduling is automated and daisy-chained across the room, eliminating operator-to-operator variance in light cycle execution. There are no lamp replacement cycles to schedule, no ballast failures to diagnose mid-run, and no thermal surprises from fixtures running without active cooling. The canopy receives consistent, spectrally targeted energy from the first day of vegetative growth through final flush — and the output data reflects it.

The mechanism behind that consistency is the Phyto-Genesis Spectrum® — a continuous 350–750nm spectral architecture built on Beyond PAR™ technology that delivers biologically active energy across UV, visible, and far-red wavelengths, supporting secondary metabolite expression, canopy penetration, trichome density, and compact internode structure. The 125-watt platform produces 266 µmol/s at a verified system efficacy of 2.14 µmol/J through 56 diodes behind a glass lens rated at greater than 99.5% transmissivity, driven by 94%-efficient modular drivers. Thermal management is active — redundant fans with over-temperature shut-off protect the diode array across the full 75,000-hour rated lifespan. Control architecture supports 0–10V dimming from 15–100%, waterproof locking data plugs, and daisy-chain topology for room-level scheduling without external relay hardware. In practical terms, the PhytoMAX-4 2S delivers 266 µmol/s across its coverage footprint at 125 watts draw with 426 BTU/hr heat output and a 2.14 µmol/J system efficacy rating.

Where This Belongs (and Doesn't)

Not recommended for circuits under ~1.04A @120V or ~0.52A @240V per fixture, or unsealed rooms lacking HVAC capacity for expected thermal load.

Minimum infrastructure requirement: dedicated 15A circuit per fixture at 120V (or appropriately sized circuit at higher voltage); HVAC system sized to manage 426 BTU/hr per unit of supplemental heat load in addition to existing room thermal baseline.

Infrastructure Note: The PhytoMAX-4 2S operates at 125 watts continuous draw. At 120V, verify circuit capacity before deploying multiple units on shared branch circuits. HVAC load calculations must account for 426 BTU/hr per fixture as a baseline thermal addition to the room's existing heat load. Consult Black Dog LED's FloraFlux™ light mapping service for fixture count, spacing, and PPFD uniformity modeling prior to installation.

How It Works

The PhytoMAX-4 2S is built around the Phyto-Genesis Spectrum® — a continuous spectral output architecture spanning 350nm to 750nm that encompasses UV, violet, blue, green, red, and far-red wavelengths under the Beyond PAR™ framework. This is not a binned multi-channel approach with discrete peaks; it is a designed spectral curve that delivers biologically active energy across the full range plants use for photomorphogenesis, photosynthesis, and secondary metabolite production — including UV-driven trichome and pigmentation responses and far-red-driven canopy penetration and extension signaling. The 56-diode array is housed in a compact 8.5" x 8.5" x 4.5" chassis weighing 9 lbs, with each diode operating behind a glass lens rated at greater than 99.5% transmissivity to eliminate the output losses associated with polycarbonate optics that yellow and degrade over time.

Power conversion is handled by modular drivers rated at 94% efficiency, minimizing resistive losses and reducing the heat burden transferred to the grow environment. Active cooling via redundant fans maintains diode junction temperatures within operating parameters across the full duty cycle, with an over-temperature shut-off circuit providing a hard protection layer against thermal runaway events. The result is a 75,000-hour rated lifespan — exceeding 8.5 years of continuous 24/7 operation — without the lamp replacement cycles, ballast servicing, or reflector degradation that define the total cost of ownership under legacy HPS infrastructure. Control is executed via 0–10V dimming across a 15–100% range, with waterproof locking data plugs and daisy-chain capability enabling room-level scheduling from a single control point. Input voltage acceptance spans 100–277V on the 2SC variant and 100–250V on the 2SP variant, providing deployment flexibility across standard U.S. commercial electrical infrastructure. In practical terms, the PhytoMAX-4 2S delivers 266 µmol/s of photon output at 2.14 µmol/J system efficacy through a 350–750nm spectral architecture at 125 watts continuous draw with 426 BTU/hr heat output and a 75,000-hour diode lifespan rating.

Pick Your Configuration

System Integration

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

• Dimming Control: 0–10V compatible controller required for dimming functionality across the 15–100% range. Daisy-chain topology supported via waterproof locking data plugs — verify controller channel capacity against planned fixture count before deployment.
• Mounting: Fixture weighs 9 lbs (8.5" x 8.5" x 4.5"). Mounting hardware and structural attachment points must be rated for the fixture weight plus dynamic load factor per local building code. Consult Black Dog LED's FloraFlux™ light mapping service for mounting height recommendations specific to your target PPFD and coverage footprint.
• Power Infrastructure: 2SC variant: 100–277V input. 2SP variant: 100–250V input. Verify branch circuit capacity for planned fixture density. At 125W per unit, calculate total amperage draw per circuit at your facility's operating voltage before finalizing electrical layout.
• HVAC Capacity: Each fixture contributes 426 BTU/hr to room thermal load. Size HVAC capacity to absorb the cumulative heat output of the full fixture array in addition to the existing baseline room heat load. Undersized cooling is the primary cause of canopy temperature variance in high-density LED deployments.
• Light Planning: Black Dog LED's FloraFlux™ software models individual LED output for precise intensity mapping. Engage FloraFlux™ planning prior to fixture procurement to confirm unit count, spacing, and uniformity targets for your specific room geometry.

Facility Integration Data

The following ROI model and comparison data are provided as operational planning references based on manufacturer-published specifications. Actual results depend on facility configuration, crop selection, environmental management, and operator execution.

Operator Field Note

• Structural Load: Each PhytoMAX-4 2S fixture weighs 9 lbs. Overhead mounting systems, racking, and suspension hardware must be rated for the fixture weight plus an appropriate dynamic load safety factor per local building and electrical code. Verify structural attachment points before installation in multi-fixture arrays.
• Electrical — Amperage: At 125W continuous draw, calculate amperage per fixture at your facility's operating voltage (e.g., approximately 1.04A at 120V; approximately 0.46A at 277V). Size branch circuits to NEC 80% continuous load rule. Do not share circuits with high-inrush equipment without consulting a licensed electrician.
• UV Exposure Warning: The Phyto-Genesis Spectrum® includes UV output beginning at 350nm. Do not operate fixtures without appropriate eye and skin protection during maintenance, inspection, or any period of direct exposure. Follow all manufacturer safety guidelines for UV-emitting luminaires.
• Thermal Setpoints: Black Dog LED specifies 85°F as the optimal leaf surface temperature for peak metabolic rates and secondary metabolite expression. Room air temperature setpoints should be calibrated to achieve this LST target, not simply to maintain ambient air temperature. Verify with canopy-level temperature sensors, not room-level sensors alone.
• Active Cooling Maintenance: Redundant cooling fans are a primary reliability component. Inspect fan operation and clear any particulate accumulation from intake and exhaust paths at regular maintenance intervals. Fan failure will trigger the over-temperature shut-off circuit — a shut-off event should be treated as a maintenance flag, not a nuisance trip.
• Daisy-Chain Topology: Waterproof locking data plugs support daisy-chain control wiring. Verify total fixture count per daisy-chain run against controller channel specifications before finalizing control wiring layout. Exceeding controller channel capacity will result in incomplete dimming command execution across the array.

Shipping & Logistics

• Origin: Ships from Cannafull Spectrum Solutions' authorized distribution point within the contiguous 48 United States. Black Dog LED PhytoMAX-4 fixtures are designed and assembled in Colorado, USA.
• Processing: Orders are processed within 1–2 business days of payment confirmation. Tracking information is provided upon shipment. Delivery timelines vary by destination and carrier.
• Damage Reporting: Inspect all shipments within 48 hours of receipt. Document any shipping damage with photographs before moving or unpacking the fixture. Report damage within 48 hours to Cannafull Spectrum Solutions at (888) 378-0017 or sales@cannafullspec.com. Claims submitted after 48 hours may not be eligible for carrier damage resolution.
• Returns: Returns accepted within 30 days of delivery. Return Authorization (RA) required prior to shipment. Contact Cannafull Spectrum Solutions to initiate the RA process before returning any unit.
• 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

• Black Dog LED PhytoMAX-4 2S 125W LED Grow Light Fixture (2SC or 2SP variant as ordered)
• Power cord — water-tight locking cord (2SC variant) or IEC cord (2SP variant)
• Manufacturer documentation and warranty registration information

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.