Spider Farmer SF-Glowr40 LED grow light with red spectrum, beneficial for indoor plant growth and flowering.
SF-Glowr40 PPFD
SF-Glowr40 IP65 Water-resistant
Spider Farmer SF-Glowr40 LED grow light with daisy chain design, allowing efficient linking of multiple lights for indoor plant growth.
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R40-7
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Spider Farmer SF-Glowr40 LED grow light with red spectrum, beneficial for indoor plant growth and flowering.
SF-Glowr40 PPFD
SF-Glowr40 IP65 Water-resistant
Spider Farmer SF-Glowr40 LED grow light with daisy chain design, allowing efficient linking of multiple lights for indoor plant growth.
R40-8
R40-7
2025 Spider Farmer Genius Grow System SensorPro Kits with CO2 Sensor and PAR Meter, Ideal for Optimizing Grow Tents, Grow Rooms Original price was: $69.99.Current price is: $59.99.
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420 Price Guarantee丨Spider Farmer DWC Hydroponics Grow System with Top Drip Kit 7 Gallon Deep Water Culture with 15W Air Pump 4 Buckets Original price was: $169.99.Current price is: $159.99.

Spider Farmer®GlowR40 40W Deep Red Spectrum 660nm Supplemental LED Grow Light for Indoor Plants,Hanging Plug in Grow Lamp for Hydroponic Greenhouse Plants Seedling Veg

$79.99

The SF-GlowR40 LED Grow Light (650-665nm) boosts photosynthesis during flowering and fruiting, ensuring strong plant growth.

Wattage– 40W (20W Each Light Bar; 2 pcs)
Light size: 2.06ft*0.15ft*0.12ft (1PCS)
Max Daisy Chain Number: 16 Single Bars (110V)/ 32 Single Bars (220V)

GlowR40 is suitable for under 500W as a reference. (SF2000 /SF4000 /G3000/G4500 /SE4500 /SE5000 /G5000), it can also be horizontally or vertically hung separately for any grow space. Designed to fit most lights for added safety and ease of use.

 

Fast Shipping

Same day delivery, 3-8 business days for the product to reach you.

After-Sale Service

Up to 5 years warranty. Best customer service.

The Cyber Monday sale will end on December 8nd.

Fit Guide

Check the following fit chart to find how many lights you need for your grow tent. For Bigger Growing Space, SF4000 / SF7000 / SE5000 / SE7000 will be more suitable.

SF SERIES
SF Tent Size # of SF1000 # of SF2000 # of SF4000 # of SF7000 SF FAN COMBO
2’x2’ 1 / / / 4 inch
3'x3' 1 1 / / 4 inch
4.5'x2' 2 1 / / 4 inch
4'x4' 4 2 1 / 6 inch
5'x5' 6 3 1 1 6 inch
SE SERIES
SF Tent Size # of SE3000 # of SE5000 # of SE7000 # of SE7000-730w SF FAN COMBO
2’x2’ 1 / / / 4 inch
3'x3' 1 1 / / 4 inch
4'x4' 1 1 / / 6 inch
5'x5' 2 1 1 1 6 inch
Size Guide

Frequently Bought Together

+ Spider Farmer UV30 & IR16 LED grow light bar for plants, with UV and infrared light for enhanced growth – 23.6''
Price for both: Original price was: $175.98.Current price is: $167.18. Save $8.80
Description
  • Red LED Light Diodes (650-665nm): Utilizing the 650-665nm red light spectrum is crucial for plant growth stages. This specific wavelength of red light has been proven to play a vital role during the flowering and fruiting phases, enhancing yield.
  • IP65 Waterproof Transparent Lampshade： SF-GlowR40 is equipped with an IP65-rated waterproof transparent lampshade, effectively safeguarding LEDs and circuits from moisture impact. This feature ensures normal operation even in high-humidity environments, prolonging the product’s lifespan.
  • Daisy Chain Design：Designed with daisy chain capability. SF-GlowR40 is up to 16 light bars in series at 110V & Up to 32 light bars in series at 220V. SF-GlowR80 is up to 8 light bars in series at 110V & Up to 16 light bars in series at 220V.
  • Multiple Installation Methods: Supporting various installation methods, including bottom, side, under-lighting, and top lighting of tent or room. This flexibility addresses potential issues in plant growth, such as uneven light distribution due to varying plant heights, resulting in improved cultivation outcomes.
 
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WHY CHOOSE US

1. Customer Satisfaction and Quality Products
Spider Farmer is a reputable brand in indoor and hydroponic gardening. Its products are widely used by farmers, hobbyists, and professionals. The company's mission is to help people grow healthy and vibrant plants in any environment. Spider Farmer continuously works to enhance and expand its product range to meet the evolving needs of its customers.

2. Best Prices Guarantee
Spider Farmer is committed to providing the best prices online for all our products. When you shop with us, rest assured that you are receiving the best online prices.

3.Enjoy Free and Discreet Shipping Across the USA
Our company is pleased to provide complimentary shipping to nearly every state in the USA, utilizing trusted couriers such as FedEx, UPS, USPS, and other reliable shipping providers. We understand the importance of privacy and will ensure that your package arrives discreetly.

4. Commitment to Customer Care
At Spider Farmer, we take responsibility for ensuring that our customers are always satisfied with their purchase. If anything is wrong, we guarantee to make it right, and you can reach us via call, email or message, and we will respond in about 1 business day or less.

5.Hassle-Free Returns and Refunds
In case your purchase does not meet your standards, we offer a hassle-free 30-day refund and return policy. Refer to our full return policy for details.

6.Dependable Global Shipping
We offer international shipping for all our products via FedEx, UPS, USPS, DHL, and other reputable couriers. To obtain a shipping quote, please proceed to the checkout process or get in touch with our customer service team for further assistance.

7. Buy Now, Pay Later with PayPal

Time and flexibility are on your side. Get what you want and break the payments up over weeks or even months.

8. Secure Payment Methods

We accept major credit and debit cards, PayPal, and bank transfers, and all card payments are processed through our encrypted SSL security processing system, ensuring that your identity is always protected.

Spider Farmer is dedicated to providing high-quality products and exceptional customer service to ensure a happy growing experience for all our customers.

SPEC

GlowR40 Specifications

Product Name GlowR40
Spectrum 650-665nm
Diode Amount 36 x 2=72 PCS
Power Draw 20W x 2 ±5% @ AC100-277V
Coverage Recommended main lights ＜500W
Light Size 62.7 x 4.5 x 3.7 cm (24.7'' x 1.77'' x 1.46'')
Net Weight 0.932 KG
Gross Weight 1.3 KG
Input Voltage AC100-277V
Amp 0.3505 A @ AC120V
0.1778 A @ AC240V
0.16 A @ AC277V
Frequency 50-60 Hz
Operating Temperature -20-35℃
Lifetime 50000 H
DB 0 dB
Power Cord Length 1.5 m (59.1'')
Interconnect Cable Length 1.4 m (55.1'')

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