Spider Farmer SF4000 LED Grow Lights for Indoor Plants in 4x4 Grow Tent | 450W Dimmable Full Spectrum Grow Light, New-Gen High-Efficiency Diodes 2.7 PPE System for Seed Starting, Vegetables & Bloom
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Availability:
15 left in stock
Arrives
Tuesday, Aug 11
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Size: 4x4
Features
- Cutting-Edge Upgraded LED Chips for Unrivaled Performance: All-new premium upgraded LEDs with 2.7 mol/J system PPE and increased diode count, delivering nearly identical performance to our previous version. It features superior light quality and a potent blue spectrum for healthy veg growth and root development, plus a fanless silent design, and delivers consistent full-spectrum performance across all growth stages with greater cost-effectiveness
- 5-Year Warranty: Our LED Plant Lights are often copied but will never have our quality or commitment, we provide 5 years of after-service at a local maintenance center (US/CA/UK/EU/AU). Make sure you purchase authentic Spider Farmer grow lights, really can give you high-quality grow lights at a price that is affordable. For any questions, feel free to e-mail us, and we will help you resolve them
- Ideal For All Growth Stages: Excellent full spectrum - white, blue, red and IR (3000K, 5000K, 660nm and IR 760nm, IR is dimmer than other red diodes. You can wear glasses to see it). 3000K providing more reddish light and the 5000K providing more blueish. The 660nm red and IR light is especially useful during bloom, where it speeds up flowering time and boost yields. Uniformly across the surface and deep into the roots and bottom of canopy for consistent, highest quality flowers
- New Diode Layout & Dimming Design: 2026 New Version SF4000 450W growing lights, the diodes arrangement gathered at the edge makes the PPFD more uniform, absorb light better, produce higher yields. The dimming knob be adjusted the light intensity at liberty, and compatible with GGS controllers. Dimming and scheduled on/off cycling based on plant growth stage. Multi-light connection with unified dimming especially beneficial for large area of indoor growing and commercial planting
Description
Created in 2015, Spider Farmer will always be fresh in providing the most suitable LED grow lights with the high quality as well as the affordable prices. A complete and considerable sales is formed, and still on its way to perfect. We will always keep the grower opinions in mind, and make the grow become simple.
Color: White
Shape: Rectangular
Material: Aluminum
Finish Type: Painted
Light Source Type: LED
Light Source Type: LED
Power Source: Corded Electric
Voltage: 240 volts
Light Output Maximum: 79296 lumens
Light Source Wattage: 450 watts
Mounting Type: Ceiling Mount
Light Source Special Features: dimmable
Number of Light Sources: 1
Bulb Base: GU24
Wattage: 450 watts
Item Weight: 14 pounds
Item Dimensions L x W x H: 25.39"L x 21.1"W x 2.32"H
Color: White
Shape: Rectangular
Finish Types: Painted
Style Name: Modern
Material Type: Aluminum
Shade Material: Aluminum
Brand Name: Spider Farmer
Model Number: SF4000
Manufacturer: Spider Farmer
UPC: 686494419339
Unit Count: 1 Count
Manufacturer Warranty Description: 5-year warranty.
Item Type Name: SF4000
Manufacturer Part Number: SF4000
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Aug 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 2x2
Amazon Review for SF 1000. Impressive Lighting Solution for My Indoor Grow Tent! Review: I recently purchased the Spider Farmer SF 1000 LED grow lights, and I must say, I'm thoroughly impressed! I initially bought one unit to grow a single plant. but I was so satisfied with its performance that I ended up purchasing three more over the span of a week to fill out my 4x4 grow tent. Now, with a total of four SF 1000s in my indoor grow tent, the lighting is absolutely fantastic! First and foremost, let me commend Spider Farmer for their exceptional customer service. From the moment I reached out with inquiries about the product, they were prompt and helpful in providing all the information I needed. They truly value their customers and go the extra mile to ensure satisfaction. In terms of product quality, the SF 1000 is top-notch. The build is sturdy and durable, giving me confidence that these lights will last for a long time. The full-spectrum lighting output is remarkable, providing the perfect balance of light for my plants' growth stages. I've noticed significant improvements in their overall health and vitality since using these lights. Energy efficiency is another standout feature of the SF 1000. These LED grow lights consume minimal power while delivering impressive light intensity. They're environmentally friendly and help keep electricity costs in check, which is a big plus for any indoor gardener. The installation process was hassle-free, thanks to the well-designed hanging kit provided with the lights. It made mounting them in my grow tent a breeze. Additionally, the adjustable dimming feature allows me to fine-tune the light intensity according to my plants' specific needs. I can confidently say; and not just because their stickers are fire,that Spider Farmer as a company has won me over with their SF 1000 LED grow lights. The combination of their outstanding customer service, high-quality product, energy efficiency, and ease of installation sets them apart from other popular brands with a similar product selection. If you're looking for a reliable and efficient lighting solution for your indoor grow tent, I highly recommend giving the Spider Farmer SF 1000 a try. It has exceeded my expectations, and I'm sure it will do the same for you. Happy growing!
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Reviewed in the United States on September 10, 2023 by Jim
Size: 4x4
This will grow what you want exactly how you want. I've bought 4 of these, no complaints at all. The LED's reduce heat, easy set up.
Reviewed in the United States on April 29, 2026 by Austin
Size: 2x2
First, I'd like to say that I rarely review any products because the items I get are usually average crap, which doen't deserve reviews. Secondly, I do not get paid to post reviews, and Spider farmer isn't paying me to say this. I research everything I buy. I don't just research it, I look at every review, comment, and question about an item i'm interested in buying. I try to spend a few hours researching what I want to buy. About this light.. I had a high budget for a light. I looked at so many lights ranging from $100 to $1200 dollars. I decided to go with Spider Farmer. I went to those weed forums online to see what those average people are saying about lights. I was super impressed with Spider farmer. There wasnt one bad thing anyone said about them...not one. I was so sure that this was a great light, that I actually purchased another one before I received my first one! Thats how sure I was. When I got home, I was like a little kid, I immediately opened up the box. I unpacked it, and the first thing I did was run to the nearest outlet to see how bright this light was. All I can say is Holy Crap! The entire room light up like I was using one of those Sky Tracker lights you see in parking lots of grand openings lol. Thoughts... The light doesnt have a fan, but if you can get a cheap clip on fan, just aim it over the ballast on the light. It will not even get warm... The no fan is not an issue. Since it has no fan, it's super quiet. You don't need this light 12" above your plants. It doesnt matter if you keep it 12" above your plants, or 30" above. It is BRIGHT!!! I have it in a 2x2 tent, and I think it's crazy bright! If you think this light may be a good choice for your plants, but you just aren't really sure enough. Let me just say that you would be silly not buying this light. Whoever the person (people) is behind the name Meizhi, they seem like great people. Ive read the questions and comments several times, and Meizhi is right there, answering every question. Great light! Great Price! Great Customer Support! It pays to research!
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Reviewed in the United States on January 31, 2020 by john
Size: 2x4
I have been growing high quality weed for almost 10 years now and always had great success until 2019. I got bugs that I've never had before and it took me a long time to identify what I had and how serious it was, so in the end, I lost strains that I'd been cloning for 3-4 years. The bug was 'Hemp Russet Mites' and they are prevalent here because it is becoming a hemp capital rapidly. I figured it was time to upgrade my system. I bought a Bloombox from BC Northern lights several years ago. It's been a very good grow system, but as I learned to be a better grower, I've modded my box pretty heavy. I unwired the 400W HPS and wired this baby in. I made little feet so that it sits right on top of the glass inside the bloombox flower chamber light area. So when the bloombox computer turns the lights on, this LED upgrade comes on. The fans come on as normal, so it's continuously cooled by the Bloombox cooling fans. I've been using this for about a month and I love it very much. The growbox is much brighter. It uses about 177 Watts less than the 400W HPS before. So it runs cooler, uses less electricity and the plants love it. There is nothing to change, I just flip the switch from veg to flower (on the Bloombox) and it just changes the timing from 18 hours to 12 hours. The lighting from the growlight does not change between veg and flower. Only the timing (as provided by my growbox). In the enclosed pictures, I took a screenshot on Jan 31 of my two plants that I grew from seed. As you can see by the pics, they grew a lot in one month. This was all with the Spider lights. The last pic shows how well the flowers are doing, both male and female! I decided to cross breed so I hope to have seeds that are Girl Scout Cookies and Chemodo Dragon for my own strain. I feel like this light is so much better than the 400W HPS it replaced. They could really make the package complete if they shipped their lights with a few cool stickers. But yes, if you are looking for a great veg/flower light, this is it!
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Reviewed in the United States on February 25, 2020 by Andy
Size: 4x4
I got this light at the beginning of the year to start my summer season crops indoors before the snow melted so I could get a jumpstart on the spring planting season. Its pretty damn nice!!! A little bummed they raised the price once they realized what they had, although they did add an external dimmer on the newest model which I totally wish mine had. The growth and yields are pretty dang nice, and it covers a 4x4 table very well!!! I have ran this against 600HPS in a magnum XXXL hood. ( our old commercial standard for 4x4 tables ) and it holds it own very well. I do wish the boards where a little farther apart and the whole unit was a little larger just an extra .75inches between the boards would have worked and really gave amazing coverage over a 4x4 without hurting anything IMO. Now is this an American Made HLG no no its not, BUT that doesn't mean its not a very good light for the money!!!!! With the new improvements such as the external dimmer dial, and daisy chainable dimmer control so 1 dimmer can run multiple units is a great feature for future upscaling. Now it does tend to run a bit hot to the touch, nothing like a non air-cooled HPS runs but still easily over 100 degrees farenheit. Also the cables and clips provided to hang it do work, but if you have lower ceilings or space is of a premium in your room/tent they can be a bit annoying as they take up about 8-10inches of additional space the way its designed. This is nothing that can't be worked around with a little creative thinking but is still a tad annoying none the less. Quality and yields ( for fragrant/medical flowers ) have been plenty nice, at 400-450watts power draw it tends to produce about 45-50 grams a sq. ft. depending on your style and of course genetics but still on par with running 600 HPS over the same table, same genetics, same everything only thing changed was the light. Long story short, if you need to cover a 4x4 and do it well, the SF-4000 is a solid performer!!!
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Reviewed in the United States on July 27, 2020 by Land of Corn and Soy Oh Boy!
Size: 4x4
Spider Farmer SF4000 light is top notch. Highly durable and perfect wattage for grow. Warranty for 5 years. I had my power supply ballast go out after 2 yrs. Of continuous use and customer service helped me replace it hassle free. Took about 2 weeks for the process and shipping. I can say to just be patient as it works out. Nolan went above and beyond with customer service.
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Reviewed in the United States on June 3, 2026 by kari eaton
Size: 2x4
Great for the the specs it says and still running. I use this and a budget light in a 4x4 space. Worked excellent and a 2x4 space too. Almost too strong for the 2x4 and not strong enough on its own for a 4x4 space. Great to pair with others. Especially for the wattage.
Reviewed in the United States on May 11, 2026 by Sarah Maynard
Size: 2x4
I own both models: SF1000 and SF2000. The light has a simple, polished design. No need to assemble. The aluminum board is thick and sturdy. It gets hot to the touch, but its much cooler than other techs. Rubbery coating reduces risk from splashes. The driver is solidly fixed in place, resulting in a solid unit. No power is wasted on fans or inefficient drivers. And the Samsung diodes offer a high efficacy rating of 2.7 umol/J. I like the blend of LED colors. Some quantum boards only have a single color for all diodes. Compared to them, this LED has a more complete spectrum. USAGE: The rectangular shape produces a different light distribution pattern. I estimate the light will evenly cover a 48" x 34" area at a distance of 27”. This would be excellent for low-light or vege plants. For mature, high-light vege / bloom plantings: 43" x 28" at a distance of 24”. For very high-light BLOOM / BUD (medicinal) end stage growth: 36" x 20" at a distance of 18”. See my PPFD chart for the numbers. And see my YT video for more measurements! The 202w SF2000 could replace a 400w HID. Magnetic vs electronic ballasts vs doubled ended HPS systems all have different rates of efficiency. So it depends on the type of HID and its specs. I've recently compared this light to a brand name Quantum Board by HLG. Two of these SF-2000s would produce almost the same amount of light for HUNDREDS of dollars less. Or you could even buy THREE of these for that much money and your light output would greatly exceed the HLG unit. DIMMING: There's confusion about the dimming options for this light. Some sources claim the SF2000 cannot be dimmed. It has a 240 watt driver that is already underdriven from the factory. Well, I was able to dim mine with no apparent issues. I took it all the way down to 50 watts. And then I decided to lock it in at 75 watts to vastly outperform a 4 bulb, 2 foot T5 fluorescent system. You MUST have a wattage meter to do this. And you should NOT raise the wattage above factory settings! This light is a huge a step above DIY set ups. The Spider Farmer LEDs are better than many other quantum LEDs sold on Amazon. Three year warranty sounds great. Seller includes contact info to get in touch as needed. But hopefully I won't need to! CONS: Because there's no external switch, the dimming option is not convenient for frequent on-the-fly changes.
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Reviewed in the United States on October 5, 2019 by AlboPepper