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Spider Farmer® SF4000 450W Full - Spectrum Dimmable LED Grow Light For 4×4’/5×5′ - Green Thumb Depot
Spider Farmer® SF4000 450W Full-Spectrum Dimmable LED Grow Light For 4×4’/5×5′

Spider Farmer® SF4000 450W Full-Spectrum Dimmable LED Grow Light For 4×4’/5×5′

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SKU: SF-4000

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Is the Spider Farmer® SF4000 450W Samsung lm301H EVO right for me?

If you're an indoor gardener seeking a high-performance, energy-efficient, and versatile lighting solution, the Spider Farmer® SF4000 is an excellent choice. Suitable for cultivating vegetables, herbs, or ornamental plants, it offers the full spectrum of light necessary for all growth stages.

  • Features & Benefits
  • Product Specifications
  • What is included?
  • Warranty Policy

Spider Farmer® SF4000 450W Samsung lm301H EVO LED Grow Light

The Spider Farmer® SF4000 450W LED Grow Light is a premium option for both hobbyists and professional growers, delivering exceptional performance and efficiency.

  • Equipped with Samsung LM301H EVO LEDs for superior efficiency
  • Full-spectrum lighting suitable for all growth stages
  • Dimmable design allows precise light intensity control
  • Robust construction ensures long-lasting performance
  • Energy-efficient operation reduces electricity costs

Why choose the Spider Farmer® SF4000 450W Samsung lm301H EVO LED Grow Light?

This LED grow light distinguishes itself through its advanced LED technology, delivering high efficiency and a full spectrum ideal for various plant types. Its dimmable feature offers flexibility to adjust light intensity, catering to the specific needs of your plants throughout their growth cycle.

Why Spider Farmer?

Spider Farmer is renowned for its innovative LED grow lights, developed by a passionate team of horticulturists and engineers. They prioritize sustainability and efficiency, offering high-quality products that transform traditional plant cultivation methods.

Why Buy From Us?

At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.

Excellent 4.8 out of 5 based on 1,247 reviews
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Reviewer
Jim D
Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I'll definitely order from them again
Reviewer
Glenn Appleton
The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we're starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Reviewer
Freddie
Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
Reviewer
Kar
←
→

FAQ Section

What is the actual power consumption of the Spider Farmer® SF4000 LED Grow Light?
The Spider Farmer® SF4000 LED Grow Light consumes approximately 450 watts of power.
What is the recommended coverage area for this grow light?
This light is designed to cover a 4x4 ft area during the flowering stage and up to a 5x5 ft area during the vegetative stage.
Does this light emit a full spectrum suitable for all plant growth stages?
Yes, it provides a full spectrum of light, including 3000K, 5000K, 660nm, and IR 760nm, suitable for all growth stages from seedling to harvest.
Is the light intensity adjustable?
Yes, the SF4000 features a dimming knob that allows you to adjust the light intensity to meet your plants' specific needs.
What type of LEDs are used in this grow light?
The SF4000 utilizes high-efficiency Samsung LM301H EVO LEDs, known for their superior performance and longevity.
Does this light require a cooling fan?
No, it features a fanless design with an aluminum heat sink for efficient passive cooling, ensuring silent operation.
Is this grow light suitable for both beginners and experienced growers?
Absolutely, its user-friendly design and high performance make it ideal for both novice and seasoned growers.

Specifications

Spider Farmer® SF4000 450W Samsung lm301H EVO LED Grow Light Specifications
Light Spectrum Full Spectrum (660-665nm, 3000K, 5000K, 760nm IR)
Weight 19.1 lbs (8.7 kg)
Voltage 100-277V AC
Power 450W ±5%
Coverage Area 4' x 4' (flowering), 5' x 5' (vegetative)
Dimensions 25.5” x 23.6” x 1.9”
PPF 1141 μmol/s
PPE 2.75 μmol/J

What’s in the Box?

The Spider Farmer® SF4000 450W Samsung lm301H EVO LED Grow Light includes:

  • Spider Farmer® SF4000 450W unit.
  • Power cables and connectors
  • User manual and installation guide.

Warranty Policy

Please check out the manufacturers website for Warranty related issues.

Is the Spider Farmer SF4000 Suitable for Your Grow Tent?

The Spider Farmer SF4000 is ideal for growers looking for a high-performance and energy-efficient lighting system for a 4×4 ft to 5×5 ft grow tent. Built with premium Bridgelux LEDs and an advanced board design, it delivers deep canopy penetration, even light coverage, and a full-spectrum output suitable for all plant stages, from early seedlings and vegetative growth to flowering and harvest. Featuring a dimmable driver, users can easily adjust brightness levels, fine-tune light intensity, and optimize settings for different growth phases. Perfect for indoor gardeners, hobby growers, and larger-scale cultivators, the SF4000 ensures energy-efficient operation, robust plant development, and consistent high yields in grow spaces up to 5×5 ft.

What’s Updated in the 2026 Version of the SF4000?

With recent advancements in LED technology, the SF4000 now features premium Bridgelux diodes to ensure strong and consistent lighting performance.

The upgraded model includes improved diode density, helping maintain high light efficiency, stable PPF output, and even canopy coverage comparable to earlier premium versions. Core performance remains reliable, supporting vigorous plant growth and consistent cultivation results.

High Output & Uniform Light Coverage
The SF4000 450W LED grow light uses an advanced board design to deliver even light distribution across the entire canopy, including corners of the grow space. With high efficiency, it is ideal for 4×4 ft to 5×5 ft grow tents when paired with proper ventilation.

Full Spectrum for All Growth Stages
Designed with a complete spectrum (660–665nm, 3000K, 5000K), the SF4000 supports plants through every stage, from seedlings to vegetative growth and flowering. A built-in dimmer allows easy brightness adjustment for optimal plant development.

Efficient Heat Management
Its aluminum board construction improves heat dissipation and airflow, reducing excess heat buildup and minimizing plant stress. This design allows closer placement to the canopy for enhanced growth performance.

Dimming & Daisy-Chain Capability
The SF4000 supports dimming control and daisy-chain functionality, enabling multiple lights to be connected and managed together, making it suitable for grow tents, hydroponic systems, and indoor cultivation setups.

Features & Benefits

Specifications

What is included?

Warranty & Returns

Features

Maximize Your Indoor Growing Performance

Engineered for dependable performance in a 4×4 ft to 5×5 ft grow tent, the Spider Farmer SF4000 features high-efficiency Bridgelux LEDs in an advanced board design for uniform PPFD distribution and deep canopy penetration. Its passive cooling system and low heat output help reduce plant stress while allowing closer placement to the canopy for enhanced growth. With a balanced full spectrum suitable for all growth stages, from seedlings to flowering, plus a dimmable driver for accurate brightness control, the SF4000 ensures energy-efficient operation and consistently high-yield harvests.

High Efficiency

Bridgelux LEDs

Full Spectrum

Deep Penetration

Daisy Chain

Quiet Operation

Benefits of LED Grow Lights

LED grow lights offer numerous benefits for plant cultivation. They are energy-efficient, customizable in spectrum, emit minimal heat, and have a long lifespan. These qualities reduce costs, enhance growth, and promote environmentally friendly and low-maintenance cultivation practices.

Instant On/Off

It allows precise control over light cycles.

Full Spectrum Lighting

This promotes healthier and more robust plant growth.

Low Heat Emission

This reduces the risk of heat stress and saves them from damaging

Easy Installation

LED grow lights require less maintenance, saving you time and effort.

Optimized Light Output

Allows you to adjust the light spectrum to suit different plant types and growth stages

Power Saver

LED grow lights save energy, costs, and promote sustainable cultivation.

Durable Design

Constructed with top-quality materials, ensuring prolonged use in various conditions.

Consistent Output

Engineered for sustained performance, guaranteeing optimal light output over time.

wetanddry

Why Spider Farmer?

Spider Farmer is trusted by growers worldwide for delivering reliable, high-efficiency LED grow lights at an exceptional value. Their fixtures use premium LEDs, advanced drivers, and rugged construction designed to perform for years. With smart controls, strong warranties, and proven grow results, Spider Farmer provides professional-grade lighting at accessible prices, making it a top choice for home and commercial cultivators.

wetanddry

Spectrum Matters

The Spider Farmer SF4000 provides a balanced full-spectrum light engineered to support plants across every growth stage, from early seedlings to heavy flowering. Powered by high-efficiency Bridgelux LEDs with 660–665nm deep red diodes and 3000K–5000K white light, the spectrum enhances photosynthesis, encourages strong vegetative growth, and promotes dense, even blooms. Ideal for full-cycle cultivation in a 4×4 ft to 5×5 ft grow tent, this advanced lighting solution helps maintain uniform canopy development and consistent, high-quality harvests throughout the entire growing cycle.

Balanced Spectrum Output

Features Bridgelux LEDs with 660–665nm red and 3000K–5000K white light for full-cycle growth.

Wide Coverage Area

Board design delivers uniform PPFD across a 4×4 ft to 5×5 ft grow space.

High Efficiency Output

Achieves strong PPE performance with powerful light output and energy savings.

Excellent 4.8 out of 5 based on 1,247 reviews
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Jim D
Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I’ll definitely order from them again
Glenn Appleton
The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we’re starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Freddie
Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
Kar
←
→


Why Thousands of Growers Choose to Work Exclusively with Greenhouse with plants

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FAQ Section

What grow tent size is the SF4000 suitable for?
The SF4000 is ideal for a 4×4 ft grow tent during flowering and can cover up to 5×5 ft for vegetative growth with uniform light distribution.
Is the SF4000 dimmable?
Yes, it includes a built-in dimmer knob that allows easy brightness adjustment for different plant growth stages.
Can the SF4000 be used for all plant stages?
Yes, its full-spectrum lighting supports seedlings, vegetative growth, and flowering phases effectively.
Does the SF4000 produce a lot of heat?
No, it features passive cooling with an aluminum design that efficiently dissipates heat and reduces plant stress.
Is the SF4000 suitable for beginners?
Yes, it is easy to install and operate, making it suitable for both beginners and experienced growers.
Can multiple SF4000 lights be connected together?
Yes, it supports daisy-chain functionality, allowing multiple lights to be linked and controlled together.
What is the recommended hanging height?
Typically between 12–24 inches above the canopy, depending on the plant growth stage.
Is the SF4000 energy efficient?
Yes, it provides high PPE efficiency, delivering strong light output with lower energy consumption.
Does it provide even light coverage?
Yes, the board design ensures consistent PPFD distribution across the entire canopy area.

Specifications

SPECS & DIMENSIONS

Weight 6.38 kg (Net) / 8.57 kg (Gross)
Dimensions 64.8 x 53.6 x 5.0 cm / 25.51 × 21.10 × 1.97 Inch
LED Light Spectrum Full Spectrum (660-665nm, 730-740nm, 2800-3000k, 4800-5000k)

DESIGN & PERFORMANCE

Power Input

  • AC 100–277V, 50–60Hz compatibility for indoor tents and growing systems.

LED Chips

  • Premium Bridgelux diodes with 660–665nm red light for enhanced growth.

Driver System

  • High-quality built-in driver ensures stable output and efficient heat dissipation.

LIGHTING CONTROL

Dimming Adjustment

  • 0–100% dimmer knob allows precise brightness control and daisy-chain support.
Brand Spider Farmer
Model / SKU SF4000
LED Type Bridgelux
Core Coverage 4x4 ft.
Max Coverage 5x5 ft.
Grow Tent Compatible 4' x 4'
Recommended Fan Size 6-Inch
PPF 1171 μmol/S@AC120V
1170 μmol/S@AC240V
1170 μmol/S@AC277V
PPE 2.7 µmol/J
Operating Temperature -20-35℃(-4-95℉)
Input Voltage AC100-277V
Lighting Control Protocols 0-10V
Frequency 50-60HZ
Power Draw 450W ±5% @AC120-277V
Lifespan 55,000 H
Users Manual PDF

What is Included?

What’s in the Box

  • 1 x SF4000 LED Grow Light (with dimmer box)
  • 1 x Power Cord
  • 4 x YOYO Hanger Hook
  • 1 x User Manual for Installation

Warranty Policy

It's recommended to contact Spider Farmer for specific warranty information related to their LED grow lights. Please note that warranty details may vary depending on the product model, purchase location, and other factors.

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