Experience the pinnacle of indoor horticultural lighting technology. The upgraded Spider Farmer SF4000 completely redefines plant growth dynamics by integrating state-of-the-art Samsung LM301H EVO diodes. Operating at a level of efficiency previously unattainable by standard LEDs, this full-spectrum fixture delivers unmatched brightness and deeper canopy penetration, translating directly into shorter crop cycles and heavier, more resinous harvests.
Engineered with a passive, silent cooling design and a highly uniform light footprint, the SF4000 is the definitive, professional grade lighting solution for serious home growers, commercial facilities, and dedicated allotments alike.
Core Technical Breakthroughs
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Samsung LM301H EVO Diodes: Boasting a single-diode peak efficiency rating of 3.14 µmol/J PPE, these cutting-edge chips surpass industry-standard LM301B, standard LM301H, and Bridgelux 3030 models. They emit a highly potent, plant-centric blue spectrum that drastically improves plant vitality, structure, and overall nutrient uptake.
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Edge-Concentrated Diode Arrangement: To solve the common issue of central hot-spots and weak lighting at the perimeter, the SF4000 features an upgraded layout. Diodes are tightly clustered around the edges of the board, resulting in a remarkably uniform PPFD (light intensity) distribution across your entire canopy.
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Seamless Multi-Light Unified Dimming: Equipped with an ergonomic dimming knob to adjust light levels instantly from seedling right through to bloom. The integrated multi-light connection port allows commercial or large-scale growers to daisy-chain multiple units together, controlling the intensity of the entire room via a single master dial.
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Silent, Heavy-Duty Engineering: Built without noisy cooling fans, utilising a thick, premium aluminium heatsink to dissipate warmth passively and efficiently. The unit is equipped with high-safety performance drivers, robust waterproof protection on the circuitry, and protective cable sleeves for an extended, worry-free lifespan.
Optimised Full-Spectrum Distribution
The SF4000 features a rich, broadband spectrum fine-tuned for every stage of plant life, turning seeds into high-quality personal supplies:
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5000K (Cool White): Provides rich, blueish light to prevent stretching, promoting squat, dense vegetative structure and strong root networks.
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3000K (Warm White): Delivers essential reddish spectrums to simulate late-summer conditions, vital for structural node stacking.
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660nm (Deep Red) & 760nm (Infrared): High-intensity blooming wavelengths that speed up total flowering induction times and significantly boost final bud density and flower mass.
Technical Specifications
| Specification |
Details |
| Core Diode Technology |
Samsung LM301H EVO |
| Fixture Efficiency (PPE) |
2.7 µmol/J |
| Vegetative Coverage Footprint |
150 cm x 150 cm (5ft x 5ft) |
| Flowering Coverage Footprint |
120 cm x 120 cm (4ft x 4ft) |
| Compatible Grow Tent Size |
Ideal for 120 cm x 120 cm x 200 cm enclosures |
| Recommended Extraction Fan |
6-Inch (150mm) Inline Fan |
Package Contents (What's in the Box?)
Your product arrives in discreet, user-friendly packaging and includes everything needed for an immediate, secure installation:
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1 x SF4000 Samsung LM301H EVO LED Grow Light
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4 x Adjustable YoYo Hangers
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1 x Pair of Heavy-Duty Silver Hanging Hooks
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1 x 2-Metre Mains Power Cable (UK Plug)
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1 x Installation & User Manual
