01 — Description
Présentation du produit
Discover the Cosmorrow Ultraviolet 40W 90cm LED horticultural bar from Secret Jardin ! Thanks to this lighting, you will have beautiful coloring, denser foliage while optimizing their defenses against diseases, mold and parasitic attacks, while avoiding excessive heat, significant electricity consumption or even tedious bulb replacements.
Thanks to its waterproofing (IP65), you can cultivate peacefully with a certain humidity level, without any risk.
Warning: Requires Cosmorrow power supply to operate.
02 — Fiche technique
Caractéristiques détaillées
| Coverage area | Rectangular |
| Functions | Not Dimmable |
| Waterproof | Yes |
| Thermal management | Passive - Completely silent |
| Power | Under 100W |
03 — Avis clients
Customer reviews
Comments All reviews
Le produit est arrivé parfaitement emballé, aucune surprise à l'ouverture ! Très satisfait de la protection lors du transport.
Recommended to buy: Yes
Excellent produit. Fonctionne
Excellent produit. Fonctionne super bien, consomme pas trop. Livraison rapide. Satisfait de mon achat.
Recommended to buy: Yes
Rapide
Qualité au rendez-vous.
Recommended to buy: Yes
Super qualité. Fonctionne
Super qualité. Fonctionne impeccablement. Livraison sans souci. Vraiment satisfait.
Recommended to buy: Yes
Super qualité de fabrication
Super qualité de fabrication. J'ai reçu le produit bien emballé, sans aucun dommage. Fonctionne parfaitement depuis le premier jour. Les résultats dépassent mes attentes. Consommation énergétique raisonnable. Service client réactif et courtois. Vraiment pas déçu. Je vais certainement en racheter.
Recommended to buy: Yes
04 — Questions sur ce produit
Product questions
Your questions about this product
- The Cosmorrow Ultraviolet 40W 90cm LED bar indicates a favorable spectrum to enhance defenses and bring better leaf coloration. However, for optimal care of bonsais during the winter, what is the recommended exposure time per day without risking overstimulation or light stress?
The Cosmorrow Ultraviolet 40W 90cm LED bar, with its spectrum combining ultraviolet and cool white, is ideal for enhancing defenses and enhancing the leaf coloration of bonsais. For optimal maintenance during the winter, it is recommended to limit artificial light to about 8 to 10 hours per day. This duration respects the shorter natural sunlight cycle and prevents any risk of overstimulation or light stress. Maintaining a balance between light and darkness is essential for preserving the health and vigor of your bonsais in the cold season.
- Is the 40w ultraviolet LED bar 90cm effective in enhancing the natural defenses of plants in SCROG without notable thermal impact under LED?
The Cosmorrow Ultraviolet LED Bar 40W - 90cm is indeed effective in enhancing the natural defenses of plants in SCROG due to its emission primarily in UV-A. This spectrum stimulates the production of protective compounds, such as antioxidants and flavonoids, which act as a natural protection against stress and diseases.
Moreover, its operation under LED ensures a minimal thermal impact, which is ideal in a SCROG system where precise temperature management is crucial. This UV bar can therefore be integrated into your lighting without the risk of overheating, while also contributing to the overall better health of the plants.
- Is the UV effect of the Cosmorrow 40W 90cm LED bar significant in a 60x60 growing space without the risk of thermal stress?
The Cosmorrow Ultraviolet 40W - 90cm LED bar offers a notable UV effect in a 60x60 cm growing space. With its 33% of UV light at 365 nm, it naturally enhances plant defenses, thickens leaves and limits the risk of mold, thus promoting healthier and compact growth.
Positioned parallel to one side, it covers this surface well, but for a perfectly uniform UV effect, a second unit may be considered. Its low power and passive thermal management guarantee the absence of thermal stress, even in a closed and well-ventilated space.
In summary, this bar is an excellent addition to enrich your lighting without overheating your growing space.
- Is the specific power supply for Cosmorrow easy to find and reliable in the long term to avoid any lighting interruption?
The specific power supply for the LED bar Cosmorrow Ultraviolet 40W – 90cm is designed exclusively for these bars and is not compatible with standard LED power supplies. It is readily available from specialized retailers like GrowLED, which offer complete kits with suitable cables and mounts.
This power supply is recognized for its long-term reliability, benefiting from manufacturer warranties (often 2 years) and professional quality components, ensuring optimal lighting stability. To avoid any interruptions, it is advisable to have a backup model or to source supplies from a reliable seller to anticipate potential delivery times.
- How to perceive the intensity and distribution of the ultraviolet lighting of this LED bar on a medium-sized cultivation surface?
The Cosmorrow Ultraviolet 40W - 90cm LED bar combines 365 nm UV LEDs and 6500K cool white, with a wide beam angle of 115°, ensuring even coverage over an average surface, generally between 60x60 cm and 90x90 cm. To accurately perceive the intensity and distribution of UV light, it is recommended to place the bar at a height between 30 and 50 cm: higher, the light spreads more widely but with less intensity, lower, it is more concentrated over a smaller area.
The actual intensity can be measured with a UV radiometer, but in the field, good exposure translates into stronger, more colorful plants with dense foliage. This bar is perfectly suited to provide balanced and beneficial UV lighting over a medium-sized cultivation area.
- What is the average lifespan of this UV LED bar and its constant efficiency in a humid environment IP65?
The Cosmorrow Ultraviolet LED bar 40W - 90cm offers a average lifespan of 50,000 hours. Its IP65 certification ensures excellent resistance to humidity and dust, thereby guaranteeing a constant efficiency even in a humid environment. This protection allows the lamp to maintain its performance without significant loss while promoting healthy growth and robustness of plants.
- Does the Cosmorrow Ultraviolet 40W LED bar really deliver on durability and IP65 humidity resistance, or is it just marketing?
The Cosmorrow Ultraviolet 40W LED bar – 90 cm truly lives up to its promises in terms of durability and IP65 humidity resistance. Its high-end LED technology ensures an average lifespan of approximately 50,000 hours, validated by positive user feedback regarding its robustness and effectiveness in both domestic and professional environments.
Regarding the IP65 protection, this is a genuine industrial classification, guaranteeing protection against dust and low-pressure water jets, perfectly suited for the frequently humid conditions of indoor cultivation. Therefore, this is not just a marketing claim, but a reliable feature for safe and durable use.
- What is the average lifespan of the Cosmorow Ultraviolet 40W LED bar and is special maintenance required to ensure its IP65 waterproofing?
The Cosmorrow Ultraviolet 40W LED bar - 90cm has an average lifespan of about 50,000 hours, ensuring long use in indoor cultivation. Its waterproof rating IP65 effectively protects it against dust and direct water jets, perfect for a humid environment.
To ensure this waterproofing over time, it is important not to open the housing to preserve the seal, to use a suitable Cosmorrow power supply, and to regularly clean the surface with a soft damp cloth, without aggressive products. It is also advisable to occasionally check the condition of the seals and the structure, especially in case of frequent exposure to moisture.
- Can we use this 40W 90cm ultraviolet LED bar in parallel with another full-spectrum light source without risking interference or stress for the plants?
Yes, the Cosmorrow 40 W – 90 cm ultraviolet LED bar can be perfectly used in parallel with a full-spectrum light source. This UV bar acts as a complement, enhancing the plants' resistance and improving their coloration without generating harmful heat.
There is no technical interference between the two sources, each operating independently. However, to avoid light stress, it is recommended to limit the overall lighting duration to 8-10 hours per day and to ensure a sufficient dark period.
When combined with full lighting, this bar offers an ideal balance to stimulate the growth and health of indoor plants.
- What power supplies is the 40W UV LED Bar compatible with exactly? Does IP65 allow for safe use in a greenhouse with high humidity?
The Cosmorrow 40W UV LED Bar - 90cm operates exclusively with a dedicated 24V power supply, such as those from the Cosmorrow range (COM40, COM2X40, etc.). These power supplies ensure stable power and perfect compatibility for one or two 40W bars.
Regarding protection, the IP65 rating of this bar ensures resistance to dust and water jets, making it perfectly suitable for use in a greenhouse with high humidity. It can therefore withstand ambient moisture and splashes without risk, provided to avoid total immersion or high-pressure water jets.
- What is the light output in µmol/s of this 40W UV LED bar and its efficacy in µmol/J to estimate its yield in g/Watt?
The Cosmorrow Ultraviolet LED Bar 40W - 90cm unfortunately does not have precise data regarding the light output in µmol/s or efficacy in µmol/J. UV LEDs generally have a lower yield than traditional horticultural LEDs because their spectrum targets specific effects, particularly the stimulation of plants' natural defenses.
To estimate a yield in g/Watt in terms of biomass, specific experimental measurements on growth under this type of light would be required, which are not currently available. Thus, without official figures, it is difficult to provide a reliable assessment.
However, this bar is appreciated for its UV contribution that promotes the quality and health of plants, but it should ideally be used in conjunction with a primary lighting source suitable for photosynthetic needs.
- How is the cooling of this 40W ultraviolet LED bar managed to ensure optimal lifespan in intense cultivation?
The Cosmorrow 40W UV LED bar - 90cm uses a passive cooling system, integrated directly into its design. Without fans or noise, this silent heat dissipation effectively expels heat, ensuring stable operation and limiting thermal stress on the components.
This technical choice optimizes reliability and prolongs the lifespan of the LEDs, even during intense cultivation. Furthermore, its IP65 protection ensures good resistance to humidity without compromising thermal management, a real plus for demanding cultivation environments.
- Compatibility of Cosmorrow power supply essential how to manage in compact micro culture the heat generated by the 40W ultraviolet bar in a space of 90x90cm
To use the Cosmorrow 40W Ultraviolet LED Bar - 90cm in a 90x90 cm space, it is essential to use the appropriate Cosmorrow power supply, designed for a voltage of 24V and a consumption of 40W, ensuring optimal operation.
Regarding heat management, this bar is equipped with an aluminum radiator for effective passive cooling, limiting heat production. However, in a compact space like a 90x90 cm grow tent, it is essential to ensure good ventilation to avoid heat accumulation and maintain an ideal temperature for your plants.
If necessary, adding an extraction system or a fan allows for even better temperature control, thus ensuring a stable and favorable environment for growth.
- Is it possible to use multiple Cosmorrow Ultraviolet 40W LED bars in parallel with a single Cosmorrow power supply without risk of overload or performance degradation?It is indeed possible to use multiple Cosmorrow Ultraviolet 40W LED bars in parallel, provided that you use an appropriate power supply. For two bars, for example, you will need a Cosmorrow 2x40W power supply, specially designed to handle the load without risk of overload or performance loss.
- Can I use this ultraviolet LED bar in conjunction with a conventional main lighting to boost the growth and resistance of my plants without the risk of overheating or excessive electricity consumption?
The Cosmorrow 40W - 90cm ultraviolet LED bar is perfectly suitable for complementary use with conventional main lighting. Its moderate power of 40W ensures reasonable electricity consumption, while its IP65 design provides good moisture resistance, limiting the risk of overheating.
It promotes plant growth and resistance by stimulating terpene production, without the risk of excessive thermal impact. However, it remains important to monitor the overall temperature of your growing environment to maintain optimal conditions.
- What is the average lifespan of the Cosmorrow Ultraviolet 40W LED bar and how is it connected to the specific Cosmorrow power supply?
The Cosmorrow Ultraviolet 40W LED bar - 90cm has an average lifespan of about 50,000 hours, thanks to its efficient LED technology and IP65 certification that ensures good resistance to moisture and dust.
For connection, it operates on 24V with a current of 1.67 A and connects via a specific IEC 24V connector. The Cosmorrow 24V power supply, necessary to power the bar, is sold separately. Simply connect the LED bar to this power supply using the provided IEC plug, ensuring a stable and secure power supply for optimal performance.
- What are the concrete advantages of using the Cosmorrow Ultraviolet 40W LED bar during the growth phase compared to traditional lighting in terms of leaf density and disease resistance?
The Cosmorrow Ultraviolet 40W LED Bar - 90cm offers several concrete advantages during the growth phase:
Leaf density: by stimulating terpene production, UV light promotes better quality foliage, even though increased density is not directly proven.
Disease resistance: the antifungal and antibacterial properties of UV light naturally strengthen the plants' immune system, effectively limiting the risks of mold and other diseases compared to traditional lighting.
Additionally, this bar consumes little energy, produces little heat, and offers great usage flexibility by easily pairing with other LED panels to adjust the spectrum according to the specific needs of your crops.
- IP65 ultraviolet bar for humidity? Compatible with standard power supply or only Cosmorrow?
The Cosmorrow Ultraviolet LED bar 40 W – 90 cm is perfectly suited for humid environments due to its IP65 rating, ensuring reliable resistance to water and dust.
It operates at 24 V and uses an IEC connector often type 60130-10 (OD5.5 ID2.1 L10). Thus, it is compatible with a standard 24 V power supply, provided that this power supply has the same connector. It is not exclusively reserved for Cosmorrow power supplies, but is compatible with any power supply that meets these specifications.
- Is the beginner evolving kit compatible with this Ultraviolet LED bar? Simple installation and connection with Cosmorrow power supply? Just to boost my first crop without hassle?
The Cosmorrow Ultraviolet LED Strip 40 W – 90 cm is perfectly suited for an evolving beginner kit. The Cosmorrow range is designed to be modular: you can start with a 40 W bar and add other UV or IR modules according to your needs by choosing a compatible Cosmorrow Power supply (1x40W or 2x40W depending on the number of bars).
Installation is simple and flexible: the LED bar can be mounted horizontally, vertically, screwed, clipped, or suspended, making it easy to adapt to your growing space, especially in a tent. The connection is done in "plug and play" directly to the Cosmorrow power supply, without complicated adaptation.
To boost your first crop, place the bar 15-35 cm from the plants and consider using a timer to control UV exposure, optimizing positive effects such as immunity stimulation and the development of bushier plants. This basic kit (UV bar, suitable power supply, mounting supports, and possibly a timer) is ideal for starting without difficulty and evolving by adding modules as needed.
- Does the Cosmorrow Ultraviolet 40W 90cm LED bar require special maintenance to maintain its IP65 waterproofing in the long term?The Cosmorrow Ultraviolet 40W 90cm LED bar has an IP65 rating, ensuring its resistance to dust and low-pressure water jets. To maintain this waterproofing over the long term, simple maintenance is sufficient: regular cleaning with a soft, damp cloth to remove dust and dirt, as well as periodic checks of the rubber or silicone seals to ensure they are not damaged. Also, avoid mechanical shocks and respect the recommended temperature range (0°C to 40°C) to preserve the sealing materials. No additional specific maintenance is required to maintain its performance over time.
- Does this 40W UV bar support continuous use in very humid environments without degradation?
The Cosmorrow 40W Ultraviolet LED Bar - 90cm has an IP65 certification, which means it is perfectly protected against dust and low-pressure water jets. This design allows for continuous operation in very humid environments, such as a grow room, without the risk of humidity-related degradation.
However, it should not be submerged or exposed to water under high pressure. For a humid environment but without immersion, this LED bar is therefore a reliable and durable choice.
- How does the Cosmorrow Ultraviolet 40W 90cm LED bar complement a classic LED panel to maximize foliage density without interfering with overall light power?
The Cosmorrow Ultraviolet 40W 90cm LED bar perfectly integrates as a complement to a classic LED panel to maximize foliage density. Thanks to its mix of ultraviolet LEDs (365 nm) and cool white (6500 K), it stimulates vegetative growth and enhances leaf quality without adding excess power or generating excess heat.
This targeted UV light acts in synergy with the main spectrum of the panel, often focused on red and blue, without competing with the overall power. Its wide distribution (angle 115°) and modularity allow for flexible positioning for optimal lighting, increasing leaf density without disturbing light intensity or causing stress to the plants.
- What is the effective luminous power and the exact spectrum emitted by the Cosmorrow Ultraviolet 40W LED bar, and how does that impact leaf density and disease resistance in indoor cultivation?
The Cosmorrow Ultraviolet 40W LED bar - 90cm consumes 40W and emits a combined spectrum: about 33% of near UV light at 365 nm and 66% of cold white light at 6500K, with a wide diffusion angle of 115° that ensures uniform coverage.
This spectrum plays a key role in indoor cultivation: UV light stimulates the production of antioxidant compounds and flavonoids in the leaves, which strengthens the density and compactness of the foliage. Moreover, this moderate exposure to UV activates the plants' natural defense mechanisms, increasing their resistance to diseases without causing thermal stress.
In summary, this LED bar promotes denser and more structured foliage as well as better overall health of crops due to its specific UV contribution, while providing uniform lighting suited to confined growing spaces.
- What advantages does the Cosmorrow Ultraviolet 40W LED bar bring to plant growth and defense compared to traditional horticultural lighting?
The Cosmorrow Ultraviolet 40W LED bar (90cm) stands out with its unique spectrum combining 33% UV (365 nm) and 66% cool white light (6500K), which stimulates more vigorous growth and supports different phases of the plant life cycle, unlike traditional lighting.
It also enhances the natural defense of plants: UV activates the production of protective compounds, limits molds, and reduces thermal stress due to lower heat emission.
Conveniently, it is waterproof (IP65), easy to install in a plug & play manner, and modular to fit various growing configurations, while offering excellent energy efficiency and reduced maintenance compared to traditional lamps.
- What is the precise electrical consumption in watt-hours per day for the 40W 90cm ultraviolet LED bar with the provided customizable Cosmorrow power supply for consumption optimization?
The Cosmorrow Ultraviolet LED Bar 40W - 90cm consumes about 480 watt-hours per day when it operates for 12 hours a day (40 W × 12 h). The provided Cosmorrow power supply is optimized to maintain this constant power without overconsumption, ensuring excellent efficiency while controlling electrical consumption.
- What are the real effects of the ultraviolet spectrum of the Cosmorrow 40W LED bar on the development of the root system and the genetic resistance of plants in SCROG under LED?
The Cosmorrow Ultraviolet 40W LED bar emits a combined spectrum of approximately 33% near UV at 365 nm, effectively stimulating root growth in SCROG. This UV spectrum promotes a denser root system, enhancing nutrient absorption and thus the overall vigor of the plants.
Furthermore, this ultraviolet radiation induces the natural production of antioxidant compounds and flavonoids, strengthening the plants' defenses against diseases, particularly mold, which is a major asset in indoor LED cultivation where humidity can be a challenge.
Finally, this bar emits little heat, thus avoiding thermal stress or burns, which indirectly protects the root system and preserves the overall health of the plants.
In summary: this UV bar improves root development and genetic resistance in SCROG, optimizing the quality and robustness of indoor cultivation under LED.
- How long does the lamp last before the ultraviolet power decreases significantly?
The Cosmorrow Ultraviolet LED Bar 40 W – 90 cm maintains effective ultraviolet power for about 20,000 hours. During this period, it effectively stimulates terpene production and helps strengthen plant immunity. To maximize its lifespan and effectiveness, it is advisable to use a timer to precisely control its operation.
- Compatible with standard power supplies or only with the proprietary Cosmorrow power supply?
The Cosmorrow Ultraviolet 40W - 90cm LED bar absolutely requires a Cosmorrow proprietary power supply to operate. It runs on 24V and 1.67A, with a driver specifically designed for this power supply. Using a standard power supply that is not suitable could compromise the electrical stability and the lifespan of the product. To ensure optimal and long-lasting operation, it is therefore essential to use the compatible Cosmorrow power supply intended for this lamp.
- What is the wavelength emitted by this ultraviolet LED bar and how does it influence the growth and defense of plants in hydroponics?
The Cosmorrow 40 W Ultraviolette LED Bar – 90 cm primarily emits at a wavelength of about 365 nm, which corresponds to near ultraviolet, combined with 66% of cool white light at 6500K. This spectral composition promotes denser and more structured foliage growth in hydroponics.
UV at 365 nm stimulates the plants' natural defense mechanisms by enhancing their immunity and helping to limit the occurrence of mold. Furthermore, cool white light complements the lighting to effectively support all phases of plant development while minimizing thermal stress due to low heat emission.
This bar is therefore ideal for improving the health and robustness of indoor hydroponic crops, offering balanced light suitable for confined spaces.
