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9.8
Spider Farmer
Spider Farmer SF4000 Grow Light
$369.99$589.99across 2 retailers
The Spider Farmer SF-4000 LED Grow Light is a powerhouse for indoor gardeners, equipped with 1212 Samsung LEDs and a dimmable Mean Well Driver for customizable lighting. With its low heat output and high efficacy rating, it promises a bountiful harvest with energy efficiency. Supported by excellent customer service and a 3-year warranty, this grow light is a reliable investment for those serious about indoor gardening.
Lowest at Amazon
$399.99 at AmazonLowest at any Popular Retailer
$399.99 at AmazonWhere to Buy
Prices last updated: April 20th 2026 7:58 pm
Product Score
Based on professional reviews and customer feedback
9.8/10
Overall
10
Expert
9.6
Consumer
Why this score?
The Spider Farmer SF-4000 LED Grow Light receives a high score owing to its exceptional performance, particularly with its efficient Samsung diodes that facilitate robust plant growth across all stages. While it boasts excellent customer service and energy efficiency, some users report concerns about the longevity of the dimmer switch after prolonged use. Overall, it remains a well-regarded option for serious indoor growers seeking reliable lighting for their plants.
8+ Excellent6-8 Good4-6 Average<4 Poor
Score
The Spider Farmer SF-4000 LED Grow Light receives a high score owing to its exceptional performance, particularly with its efficient Samsung diodes that facilitate robust plant growth across all stages. While it boasts excellent customer service and energy efficiency, some users report concerns about the longevity of the dimmer switch after prolonged use. Overall, it remains a well-regarded option for serious indoor growers seeking reliable lighting for their plants.
10/10
Expert
9.6/10
Consumer
Pros
- •Equipped with 1212 higuality Samsung LEDs providing a full spectrum of light, perfect for plant growth at all stages.
- •The Mean Well Driver is dimmable, offering precise control over lighting intensity.
- •Delivers low heat output, making it safe for prolonged use in indoor settings without risk of overheating.
- •Excellent efficacy rating of 2.7 umol/J, ensuring efficient energy use and high photosynthetic potential for plants.
- •Backed by a ear warranty with excellent customer service, offering peace of mind for users.
Cons
Bottom Line
The Spider Farmer SF-4000 LED Grow Light is a powerhouse for indoor gardeners, equipped with 1212 Samsung LEDs and a dimmable Mean Well Driver for customizable lighting. With its low heat output and high efficacy rating, it promises a bountiful harvest with energy efficiency. Supported by excellent customer service and a 3-year warranty, this grow light is a reliable investment for those serious about indoor gardening.
What Reviewers Are Saying
Praised
customer service is excellent18%
brightness and spectrum are amazing9%
great investment9%
produces very little heat9%
easy to use9%
plants are growing9%
Criticized
dimmer switch goes out9%
light runs hot9%
Customer Ratings
4.66,814 reviews
5
82%
4
9%
3
3%
2
1%
1
5%
Based on 6,814 reviews from Amazon
Professional Reviews
Common Questions
So, if you're curious about how much power the Spider Farmer SF4000 uses, it runs at about 450 watts. This grow light is pretty popular because it's efficient and doesn't hike up your energy bill too ...
Read full answer📚More About Spider Farmer SF4000 Grow Light
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TLDR Review: Spider Farmer SF4000 Grow Light
The Spider Farmer SF-4000 LED Grow Light receives a high score owing to its exceptional performance, particularly with its efficient Samsung diodes that facilitate robust plant growth across all stages. While it boasts excellent customer service and energy efficiency, some users report concerns about the longevity of the dimmer switch after prolonged use. Overall, it remains a well-regarded option for serious indoor growers seeking reliable lighting for their plants.
TLDR Review·1 years ago
9.8
Overall
💡
How much power does the Spider Farmer SF4000 consume?
Q&A·1 years ago
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What is the coverage area of the Spider Farmer SF4000 LED grow light?
Q&A·1 years ago
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Is the Spider Farmer SF4000 dimmable?
Q&A·1 years ago
Discussion
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