660 nm red light is a deep-red wavelength. It's commonly used in horticulture because it sits near a strong absorption region for plant pigments and is highly effective in artificial lighting systems. In simple terms, it’s one of the key wavelengths growers use to support photosynthesis, promote plant growth, and enhance indoor crop performance.
At this wavelength, red light can help drive the light reactions of photosynthesis by supplying energy that plants convert into chemical energy. It is also useful for plant growth more broadly, since it can support biomass accumulation, flowering responses, and efficient LED-based cultivation when paired with other wavelengths such as blue light.
In the sections below, we will look at what 660 nm red light is, what it is good for, what LED grow lights can provide 660 nm light, how OSRAM 660nm hyper red supports photosynthesis, and how it affects overall plant growth.
Table of Contents
What is a 660 nm Red Light?
660 nm red light is a deep-red wavelength in the visible range. Usually, it’s used in horticulture and red-light therapy. Because it sits near chlorophyll’s strong absorption range, it’s studied for skin-related photobiomodulation effects such as collagen support and wound healing.
What is a 660 nm Red Light?
What Color is 660nm Wavelength?
660 nm is deep red light in the visible spectrum, near the longer-wavelength end of red. In practical terms, it looks like a strong, saturated red rather than orange, purple, or near-infrared.
What Are the Differences Between 660 nm Red Light and Standard Red Lights?
660 nm light is deep red, while “standard red” usually refers to red light in the broader visible red range, roughly 620–700 nm, which can include slightly shorter wavelengths that look a bit more orange-red or lighter red.
Here is a comparison chart for 660nm red light and other red light spectrums
Why Is Spider Farmer Upgrading to OSRAM 660nm Hyper Red LEDs?
660 nm red light is primarily used in horticulture, as it is a major chlorophyll-absorbing wavelength widely used in LED grow lights to promote plant growth and flowering.
660 nm Red Light for Horticulture
Here is how 660nm red light can support plant growth.
- It drives photosynthesis efficiently, especially in the red-absorbing parts of plant pigments.
- It helps build vegetative mass and biomass accumulation.
- It supports flowering and fruiting, especially in combination with other wavelengths.
- It can help create compact growth when balanced with a small amount of blue light.
- It is highly useful in indoor and vertical gardening because it’s energy-efficient and effective for controlled-environment lighting.
Considering these benefits, we’re upgrading Spider Farmer’s SE Series LED Grow Lights models to OSRAM 660nm Hyper Red LEDs. This aims to provide a deep-red spectrum that plants use efficiently for photosynthesis, biomass production, and support for flowering. It also makes them a stronger choice for growers who want more effective indoor lighting performance.
Now, we’re featuring OSRAM 660nm Hyper Red in select products. To see specific models, please refer to the individual product pages.
2026 Spider Farmer®SE5000 480W LED Grow Light Dimmable High Yields for 4x4FT Grow Tent Smart APP Control
2026 New Spider Farmer SE1500 150W LED Grow Light, Smart App Control (WiFi & Bluetooth), Dimmable Full Spectrum for 2×2FT Grow Tent
Following industry-wide supply changes, the SE Series changed to advanced Bridgelux High-Efficiency LED Platform.
Key specs, output, and light uniformity remain consistent with previous versions. ● PPE: 2.85 μmol/J ● PPF: 428 μmol/S ● Dimension: 16.1''x16''x2.6'' (40.86cmx40.77cmx6.72 cm) ● Coverage: 2x2FT (70x70cm) ● Grow Tent Compatible: 2x2FT (70x70cm) ● Recommended Fan Size: 4-Inch ● SE1500 Full Grow Tent Kits ● Fixed LED bar, no complex assembly required. Plug-and-play design. ● App Smart Control Bluetooth & WiFi-enabled so you can easily control your equipment via the Spider Farmer APP. ● Great choice for efficient, high-quality indoor plant growth. Support plants through all stages of growth: seedling, vegetative, and flowering, making them versatile for various plant types. Ideal for indoor gardening in small to medium grow tents. Package includes: 1xSE1500 LED, 1xStandard Plug, 1xDimmable Cable, 2xRope Ratchet, 1xUser Manual
Flash Sale I 2026 Spider Farmer®SE4500 320W LED Grow Light Dimmable High Efficacy with Smart App Control (WiFi & Bluetooth) for Indoor Plants 2×4 / 3x5FT Grow Tent
Following industry-wide supply changes, the SE Series changed to advanced Bridgelux High-Efficiency LED Platform. This version uses a higher-efficiency, higher-power diode platform with improved thermal performance, resulting in higher light output and efficiency compared to the standard Bridgelux performance configuration.
Key specs, output, and light uniformity remain consistent with previous versions. ● PPE: 2.85 μmol/J ● PPF: 913 μmol/S ● Dimension: 45.38″X14.51″X3.03″(115.27x36.86x7.7cm) ● Coverage: 2’x4′ (70x140cm); 3'x5' (90x150cm) ● Grow Tent Compatible: 4.6'x2.3'x6.5' (140x70cm) ● Recommended Fan Size: 4-Inch ● SE4500 Full Grow Tent Kits ● App Control New version is Bluetooth & WiFi-enabled so you can control your equipment via the Spider Farmer APP. ● Dimmer box upgraded for enhanced digital precision control, sunrise/sunset dimming. ● SE4500 320W Led grow light, 3x led bar design provides uniform coverage & deeper light penetration. It’s designed to meet the needs of indoor growers with its high light output and energy efficiency. Package includes: 1xSE4500 LED, 1xStandard Plug, 1xDimmable Cable, 2xRope Ratchet, 1xUser Manual
2026 New Spider Farmer®SE1000W LED Grow Light Bluetooth & WiFi Smart APP Control Dimmable Commercial Vertical Farming
Following industry-wide supply changes, the SE Series changed to advanced Bridgelux High-Efficiency LED Platform. This version uses a higher-efficiency, higher-power diode platform with improved thermal performance, resulting in higher light output and efficiency compared to the standard Bridgelux performance configuration.
Key specs, output, and light uniformity remain consistent with previous versions. ● PPE: 2.9 μmol/J ● PPF: 2940 μmol/S ● Dimension: 44.17″X45.39″X3.08″ (112.19x115.26x7.82cm) ● Coverage: 5'x5' (150x150cm) ● Grow Tent Compatible: 5'x5'x6.5' (150x150x200cm) ● Recommended Fan Size: 6-Inch ● SE1000W Full Grow Tent Kits ● Fixed LED bar, no complex assembly required. Plug-and-play design. ● Foldable design for easy transportation and compact storage. ● App Control New version is Bluetooth & WiFi-enabled so you can control your equipment via the Spider Farmer APP. ● High-efficiency grow lights offers full-spectrum illumination, energy savings, and enhanced yield performance, covers a large space, approximately 5 x 5 feet (150x150cm) for flowering and larger for vegetative growth, making it ideal for large grow tents or open growing rooms.
2026 New Spider Farmer®SE7000 730W Led Grow Light Smart App Control (WiFi & Bluetooth) High Yields Commercial Lighting for 4x4FT/5x5FT
Following industry-wide supply changes, the SE Series changed to advanced Bridgelux High-Efficiency LED Platform. This version uses a higher-efficiency, higher-power diode platform with improved thermal performance, resulting in higher light output and efficiency compared to the standard Bridgelux performance configuration.
Key specs, output, and light uniformity remain consistent with previous versions. ● PPE: 2.9 μmol/J ● PPF: 2146 μmol/S ● Dimension: 44.04″X45.39″X3.04″(111.86x115.28x7.72cm) ● Coverage: 4’x4′ (120x120cm); 5'x5'(150x150cm) ● Grow Tent Compatible: 4’x4’x6.5′ ● Recommended Fan Size: 6-Inch ● SE7000 Full Grow Tent Kits
- Bar-style design delivers uniform light coverage, reducing hotspots and shadowing for consistent plant growth and more even yields.
- Premium 660nm Hyper Red diodes deliver more usable light to boost flowering, fruiting, and overall harvest performance.
- Set schedules and simulate sunrise/sunset through the Spider Farmer App to reduce plant stress and simplify daily grow management.
- Daisy-chain up to 50 fixtures and control them simultaneously, making it ideal for both home growers and commercial facilities.
2026 Spider Farmer®SE3000 300W LED Grow Light Smart App Control (WiFi & Bluetooth) Dimmable For 3x3FT Grow Tent Indoor Plants
Following industry-wide supply changes, the SE Series changed advanced Bridgelux High-Efficiency LED Platform.
Key specs, output, and light uniformity remain consistent with previous versions. ● PPE: 2.85μmol/J ● PPF: 856 μmol/S ● Dimension: 23.73″X23.02″X2.8″ (60.27*58.46*7.12cm) ● Coverage: 2’x2′ (70x70cm) 3'x3'(90x90cm) ● Grow Tent Compatible: 3'x3'x6' (90x90cm) ● Recommended Fan Size: 4-Inch ● SE3000 Full Grow Tent Kits ● App Control New version is Bluetooth & WiFi-enabled so you can control your equipment via the Spider Farmer APP. ● Dimmer box upgraded for enhanced digital precision control, sunrise/sunset dimming. ● 4x led bar design provides uniform coverage & deeper light penetration. Delivers full-spectrum lighting, promoting vigorous plant growth and higher yields. Perfect for small to medium-sized grow areas, it offers energy savings and optimal light penetration for healthier plants. Package includes: 1xSE3000 LED, 1xStandard Plug, 1xDimmable Cable, 2xRope Ratchet, 1xUser Manual
660 nm Red Light for Red Light Therapy
Besides, red light at 660 nm is commonly used for red light therapy. For example, you can use Ember Touch to reduce the appearance of wrinkles, enable collagen production, and improve skin tone and texture. It’s also used in applications like acne support, wound healing, and some inflammation-related uses because 660 nm is a visible deep-red wavelength that interacts well with surface tissues.
In short, 660 nm is well-suited for plant lighting and for skin and surface tissue photobiomodulation, rather than for general room lighting.
How Can OSRAM 660nm Red Light Be Used for Photosynthesis?
OSRAM 660nm red light is used for photosynthesis because it falls near a strong absorption band of chlorophyll, so photons in this range are efficiently captured by the photosystems that drive electron transport and energy conversion. In technical terms, it is one of the most effective wavelengths for converting radiant energy into chemical energy in the photosynthetically active range.
More specifically, at about 660nm, light is deep red and aligns closely with chlorophyll a’s absorption peak. This will maximize the excitation of photosystem pigments. That excitation feeds the light reactions of photosynthesis, where absorbed photon energy drives charge separation, electron flow, and ultimately ATP and NADPH production.
How Does OSRAM 660 nm Red Light Benefit Leaves?
When OSRAM 660 nm red light photons strike the leaf, they are absorbed mainly in the chloroplasts and converted into excitation energy in the antenna complexes. That energy is transferred to the reaction centers of photosystem II and, downstream, photosystem I, supporting the electron transport chain that powers carbon fixation.
Why Growers Use It?
LED horticulture fixtures often use a lot of OSRAM 660 nm red lights because red diodes are electrically efficient, chlorophyll absorbs them strongly, and the wavelength is highly effective for plant growth. Research also suggests that red-spectrum design can influence photosynthetic efficiency and biomass production, especially when red is combined with other wavelengths rather than used alone.
How Can 660nm Red Light Be Used for Plant Growth?
OSRAM 660nm red light is useful for plant growth because it’s one of the most efficient wavelengths for driving photosynthesis, and in practice it is often used as the main “energy” channel in LED grow lights. The practical effect is faster biomass production when the light intensity is adequate and the spectrum is balanced.
How Can 660nm Red Light Be Used for Plant Growth?
Practical Effects on Plant Growth
- It supports strong photosynthetic activity because chlorophyll absorbs red light well, so plants can convert it into growth efficiently.
- It tends to produce more compact growth when paired with a smaller amount of blue light, because pure red alone often causes stretching and thin leaves.
- It can help regulate flowering through the phytochrome system, since plants are very sensitive to red light in photoperiod responses.
- It is widely used in horticultural LED grow lights because the diode itself is efficient and inexpensive, so it is practical for indoor cultivation.
What Growers Actually See
Under most OSRAM 660nm red lights, plants often grow tall, with elongated stems and broader but thinner leaves if blue light is missing. However, if you add 10% to 20% blue light, the plants usually become shorter, denser, and more structurally balanced. In a controlled growing system, that red-blue balance is often preferred over red-only lighting for better morphology and usable crop quality.
Conclusion
By combining efficient full-spectrum lighting with OSRAM 660nm Hyper Red technology, Spider Farmer SE Series LED Grow Lights provide growers with an optimized spectrum designed for efficient photosynthesis, healthy plant development, and improved indoor growing performance.
