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From robust grow lights to essential gardening tools, every item in the kit ensures a seamless and efficient growing experience. All you need to begin is your plants, some soil, and water.
- Grow Accessories
- Led Grow Light
- Grow Tent
- Grow Tent Kits
From robust grow lights to essential gardening tools, every item in the kit ensures a seamless and efficient growing experience. All you need to begin is your plants, some soil, and water.
- Grow Accessories
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2026 Newest Version Spider FarmerĀ® SF4000 450W Full-Spectrum Dimmable LED Grow Light
Original price was: CA$489.99.CA$369.99Current price is: CA$369.99.
2026 Updated Version
The SF4000 has been upgraded to Premium Bridgelux high-efficiency LEDs while maintaining the same output, uniformity, and reliable performance.
PPE: 2.7 Āµmol/J
Coverage: 4ā²X4ā²
Grow Tent Compatible: 4’X4′
Recommended Fan Size: 6-Inch
Looking for a complete setup? Check out the SF4000 Grow Tent Kit>>>
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Top Features
- BETTER LIGHT PENETRATION:Ā TheĀ 2026 New SF4000Ā features upgraded high-performance Bridgelux LEDs, delivering strong, even light output with excellent canopy penetration. With an increased diode count and optimized layout, light efficacy, PPF output, and uniformity remain consistent with the previous Samsung-based versionāhelping you achieve reliable yields.
- HIGH EFFICIENCY & PREMIUM U.S. BRAND DIODES:Ā The SF Series is engineering-upgraded with high-performance Bridgelux diodes, increasing diode count so each LED operates under lower load for reduced stress, improved thermal stability, and extended lifespan.Ā Veg footprint is 5 x 5 ft, Flowering footprint is 4 x 4 ft.
- NEW DIODES ARRANGEMENT & DIMMING DESIGN: Upgraded SF4000 growing lights. The diode arrangement gathered at the edge makes the PPFD more uniform, and the dimming knob be adjusted the light intensity at liberty. Multi-light Connection with unified dimming is especially beneficial for large area of indoor plant growing and commercial planting.
- IDEAL FOR ALL GROWTH STAGES: With excellent full spectrum light – white, blue, red ,and IR (3000K, 5000K, 660nm ,and IR 760nm), the 3000K diodes provide more reddish light and the 5000K diodes provide more blueish light. The 660nm red and IR light is especially useful during blooming stages as it speeds up flowering time and boosts yields. Turn your seeds into your own supply!
- WELL MADE & SOLID CONSTRUCTION: The SF4000 produces no fan noise, comes equipped with a branded high safety performance driver and good quality waterproofing. The updated aluminum material is thick and sturdy and doesn’t put out a tremendous amount of heat while also providing high-quality protective covers for cables and arriving in user-friendly packaging. The quality components mean the light lasts longer and saves you money.
- As a professional manufacturer of Led grow lights for more than 10 years. Spider Farmer has always insisted on creating more efficient, suitable and high-quality home planting equipment for plant growth, and strives to become a trusted partner for every grower! You will get a Spider Farmer SF4000 grow light, instruction manual, a pair of silver hooks, a pair of black hangers.
12 reviews for 2026 Newest Version Spider FarmerĀ® SF4000 450W Full-Spectrum Dimmable LED Grow Light
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| Spider Farmer SF4000 LED Grow Light Specification | |
|---|---|
| Product Identification | |
| Brand | Spider Farmer |
| Product Model | SF4000 |
| Product Series | SF Series |
| LED | Bridgelux |
| Product Dimensions | |
| Light Size | 64.8 x 53.6 x 5.0 cm / 25.51 Ć 21.10 Ć 1.97 Inch |
| Package Size | 70.5 x 60.0 x 12.0 cm / 27.76 Ć 23.62 Ć 4.72 Inch |
| Core Coverage | 4x4 ft. |
| Max Coverage | 5x5 ft. |
| Net Weight | 6.38 kg |
| Gross Weight | 8.57 kg |
| Grow Tent Compatible | 4'x4' |
| Recommended Fan Size | 6-Inch |
| Product Technical Specifications | |
| PPF | 1171 Ī¼mol/S@AC120V 1170 Ī¼mol/S@AC240V 1170 Ī¼mol/S@AC277V |
| PPE | 2.7 Āµmol/J |
| Spectrum | 660-665nm, 730-740nm, 2800-3000k, 4800-5000k |
| Operating Temperature | -20-35ā(-4-95ā) |
| Input Voltage | AC100-277V |
| Lighting Control Protocols | 0-10V |
| Frequency | 50-60HZ |
| Power Draw | 450W Ā±5% @AC100-277V |
| Product Guide | |
| Users Manual |  PDF |
| Lifespan | 50,000 H |
| Warranty | 5 Years |
| Product Package | |
| Package Included | 1x SF4000 LED Grow Light (with dimmer box) |
| 1x Power Cord | |
| 4x YOYO Hanger Hook | |
| 1 x User Manual | |
Q & A
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Can you daisy chain the first generation SF4000 with this new generation SF4000? I want to be able to dim both lights via this new light controller. The first generation requires manual adjusting to dim the light.
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More
More
- Led Grow Light
- Grow Tent
- Grow Tent Kits
From robust grow lights to essential gardening tools, every item in the kit ensures a seamless and efficient growing experience. All you need to begin is your plants, some soil, and water.
- Grow Accessories
I would say that this is A BEAST of a lightā¦..
In a 4×4 with 4 plants scrogged out
I have never turned it past 90% and itās more than enough power. I am so so so very pleased. Will recommend to everyone
Had 2 viparspectra in a 4×4 tent. 1 driver burned out. Not much luck getting it fixed. So my local shop had one in. I tried it. WOW! Huge production. Thanks guys for an outstanding product.
I love my SF4000ššÆ
This Quantum board packs a punch!!!!!
It is way stronger than the 2 other quantum boards from different companies that I used to have! And its a smaller size than both of those lights!!!!!š¤Æā„ļø
This light definitely upped my grow game!!!!!
š«¶#HalfHeartCauseYouCompleteMe
I run 2 sf4000 in my 4 x8 tent and love the results. Always tight hard nugs and never any issues. Spider farmer lights have been worth every penny at an affordable price. Now if they could just come out with extension cables to mount the drivers outside the tent it would be the best light ever and 5 star as it creates quite a bit of heat having the drivers in there.
I love the build of this light! One of the best in the market! Great little 450w light! Performs as well as m
A single ended 1000w MH for veg so far. And can’t beat the price anywhere. Other named brabd lighting is overpriced. It’s all made in China anyway. Just order direct. And save hundreds of bucks.