Spider Farmer - SF4000 450W Samsung LM301H EVO LED Grow Light

Professional-Grade Power for 4x4 Grow Tents

If you're running a full 4x4 grow tent and want serious output, uniform canopy coverage, and premium efficiency, the Spider Farmer SF4000 with Samsung LM301H EVO diodes delivers commercial-level performance in a home-friendly design.

This is a high-output, dimmable bar-style fixture built for growers who want stronger growth, better structure, and higher yields without excess heat or noise.

What Makes the EVO Version Elite?

The SF4000 uses Samsung LM301H EVO diodes, offering system efficiency of 2.7 μmol/J (with individual diodes reaching 3.14 μmol/J).

Compared to older LM301H or LM301B fixtures, EVO delivers:

• Higher light output per watt

• Improved spectrum balance

• Stronger blue spectrum performance

• Better canopy penetration

• More uniform PPFD distribution

This translates into tighter internodes, improved vegetative growth, and strong flowering performance across the entire canopy.

Designed for Full 4x4 Performance

• 🌿 Vegetative Coverage: Up to 5’x5’

• 🌸 Flower Coverage: 4’x4’ (optimal performance zone)

The upgraded diode arrangement places LEDs along the outer edges to improve uniformity and eliminate hot spots.

Why Growers Choose the SF4000 EVO

• 💡 High System Efficiency (2.7 μmol/J)

• ⚡ 450W Power Draw – Strong output without excessive consumption

• 🔄 Built-In Dimming Knob – Adjust intensity by growth stage

• 🔗 Multi-Light Connection – Unified dimming for larger rooms

• 🔇 Fanless & Silent Operation

• 🔥 Low Heat Aluminum Heat Sink

• 💧 Water-Resistant LED Board & Quality Driver

• 🕒 Long Lifespan & 5-Year Warranty

Full Spectrum Output

Balanced spectrum designed for all growth stages:

• 3000K Warm White

• 5000K Cool White

• 660nm Red

• 760nm IR

The added red and IR support a strong flowering response while maintaining excellent vegetative structure.

Ideal For

• 4’x4’ grow tents

• High-yield indoor production

• Hydroponic systems

• Soil or coco grows

• Growers upgrading from mid-tier lighting

If you're ready to step into serious output territory, this fixture delivers.

Technical Specifications

• Power Draw: 450W

• Diodes: Samsung LM301H EVO

• System Efficiency: 2.7 μmol/J

• Max Diode Efficiency: 3.14 μmol/J

• Veg Coverage: Up to 5’x5’

• Flower Coverage: 4’x4’

• Recommended Fan: 6-Inch

• Includes:

  • SF4000 Fixture

  • Adjustable Hangers

  • Steel Hooks

  • Power Cord

  • User Manual

Built for Growers Who Want Maximum Output

The SF4000 EVO is a serious lighting solution for growers who want strong, even canopy development and premium efficiency in a 4x4 space.