Question 1

Hello, could you specify if the Cosmorrow Growing 20W 50cm LED bar, with its 6500K spectrum, is also suitable for the flowering phase or only for growth? Additionally, which Cosmorrow power supply do you recommend for a double 2x20W installation with uniform lighting?

Accepted Answer

The Cosmorrow Growing 20W LED bar (6500K spectrum) is primarily designed for the growth phase, promoting vegetative development with its rather white/blue light. For optimal flowering, it is recommended to use a model explicitly designed for this phase with a spectrum richer in red.

Question 2

Compatible with standard power supply or only with Cosmorrow power supply?

Accepted Answer

The Cosmorrow Growing 20W 50cm LED bar works only with a specific 24V power supply from the Cosmorrow brand, designed for this modular and patented technology. It is not compatible with a standard power supply.

Question 3

Is the Cosmorrow compatible power supply easy to find? Can two bars be connected in series without any issues?

Accepted Answer

The Cosmorrow Growing 20W LED strip – 50 cm works with a dedicated power supply, the Secret Jardin Cosmorrow LED Power Supply 2x20W, specially designed to power two LED bars of 20W each. This power supply is easy to find with specialized retailers and guarantees perfect compatibility. To connect two LED bars, a parallel connection must be used via the two distinct outputs of this power supply. A series connection, that is, chaining the bars on a single output, is not recommended as these LEDs require a low voltage (24V) power supply suitable for each unit. In summary, for two Cosmorrow 20W bars, the best solution is indeed the 2x20W power supply, which ensures stable power and complies with technical specifications.

Question 4

Does the Cosmorrow Growing 20W 6500K LED bar guarantee a better thermal efficiency ratio per watt compared to CMH 315W lamps to limit heat in a confined space?

Accepted Answer

The Cosmorrow Growing 20W 6500K LED bar has a much better thermal efficiency ratio per watt than CMH 315W lamps. Thanks to its reduced power consumption of 20 watts and the superior efficiency of LEDs, it produces significantly less heat for each watt consumed. CMH lamps, while effective for growth, emit more heat as a significant part of the energy dissipates as thermal energy. In contrast, the Cosmorrow LED bar converts more energy into useful light, which limits heating, a valuable asset in a confined space where thermal management is crucial. In summary, to limit heat while ensuring good vegetative growth, the Cosmorrow LED bar is a much more suitable solution than the CMH 315W lamps.

Question 5

Does the Cosmorrow Growing 20W LED bar require a specific power supply or can it work with a standard power supply?

Accepted Answer

The Cosmorrow Growing 20W LED bar - 50cm requires a specific Cosmorrow power supply at 24V. This choice ensures an adequate power supply and stable lighting, optimized for the patented modular technology of these bars. Using a standard power supply does not meet these technical requirements and may compromise the performance of your setup.

Question 6

How is passive cooling managed on the Cosmorrow Growing 20W LED bar under high humidity conditions to avoid overheating or performance drop?

Accepted Answer

The Cosmorrow Growing 20W LED bar - 50cm uses a silent passive cooling system based on good thermal dissipation through its chassis. Under high humidity conditions, it should be installed in such a way that it is not covered or obstructed, allowing ambient air to circulate freely to dissipate residual heat.Although the bar is not specifically waterproof like the Cosmorrow Ultraviolet 20W LED bar, it is designed for indoor use with moderate humidity levels typical of indoor cultivation. Good ventilation of the growing area is therefore essential to avoid any overheating or drop in performance.

Question 7

Is this 20W 6500K LED bar suitable for a complete growth cycle in hydroponics, or should it be combined with other types of lights for better performance?

Accepted Answer

The Cosmorrow Growing 20W LED bar 50 cm is perfectly suited for the growth and cuttings phase in hydroponics due to its 6500K light, which promotes optimal vegetative development. For a complete cycle, it is advisable to complement it with a light specific for the flowering phase, such as the Cosmorrow 20W Blooming LED Light. This will help optimize performance throughout the entire cycle.

Question 8

Can the Cosmorrow Growing 20W 50cm LED bar be connected in parallel to increase the illuminated area without overloading the specific power supply?

Accepted Answer

The Cosmorrow Growing 20W - 50cm LED bar can indeed be connected in parallel to illuminate a larger surface, but it is essential to use a suitable Cosmorrow dedicated power supply. Each bar operates at 24V with a current of approximately 0.83A, so when connecting multiple bars, it is imperative to set up in parallel using separate outputs from the specific power supply to avoid overload.

Question 9

Is a beginner kit with included power supply available? Is the LED easy to connect and plug in directly? How long before I see a good explosive growth with this bar?

Accepted Answer

The Cosmorrow Growing 20W LED Bar - 50cm is well-suited for beginners, as it includes a 24V external power supply, allowing you to simply and quickly connect it without complex installation. Thanks to its 6500K light spectrum, ideal for vegetative growth, you can position the bar about 15 cm from the young plants to promote rapid growth. You should see the first shoots in one to two weeks, with effective stimulation for vigorous development. It's an excellent choice to easily and effectively start your indoor crops.

Question 10

What surface area do you recommend covering with a Cosmorrow Growing 20W 50cm LED bar in terms of optimized yield and plant density before light saturation?

Accepted Answer

The Cosmorrow Growing 20W – 50 cm LED bar, with its 6500 K spectrum ideal for vegetative growth, is perfectly suited to cover an area of approximately 0.2 to 0.3 m². This range will allow you to optimize yield while avoiding light saturation, which reduces the efficiency of light per plant. For optimal installation, place the bar about 15 cm from the plants. This distance ensures good light penetration without the risk of burning. By respecting this coverage area and distance, you ensure a balanced plant density and effective lighting for maximum photosynthesis.

Question 11

What quantity of Cosmorrow Growing 20W LED bars do you recommend to optimize growth in a 1m2 greenhouse space without increasing the ambient temperature?

Accepted Answer

For a 1 m² greenhouse space, we recommend using about 4 to 6 Cosmorrow Growing 20W LED bars (50 cm). This allows you to achieve an optimal light level of 200 to 300 µmol/m²/s, ideal for growth without significantly increasing the ambient temperature due to the low thermal emission of these bars.It is important to position them evenly and ensure good ventilation to avoid any hot spots and guarantee uniform lighting on your plants.

Question 12

Does the Cosmorrow Growing 20W 50cm LED bar support continuous use for several months without performance degradation or failure of the timer or specific power supply?

Accepted Answer

The Cosmorrow Growing 20W 50cm LED bar is designed for prolonged horticultural use, notably due to its silent passive thermal management and waterproof protection (IP65), which limit the risks of overheating and humidity. Coupled with its specific Cosmorrow power supply, it benefits from optimal electrical stability, thereby reducing the risks of timer or power supply failure. Although no explicitly guaranteed feedback is available, its robustness and design make it perfectly suited for continuous operation over several months without significant performance loss, provided the correct power supply is used and in appropriate growing conditions.

Question 13

What is the average lifespan of this Cosmorrow Growing 20W LED bar and its luminous efficiency over time?

Accepted Answer

The Cosmorrow Growing 20W - 50 cm LED bar has an average lifespan of approximately 50,000 hours. After 30,000 hours of operation, it still retains about 80% of its luminous output, demonstrating very good lighting stability over time. Its luminous efficiency is around 2.7 μmol/J, a solid performance for supporting the plant growth phase. Additionally, thanks to passive thermal management and an IP65 rating, this bar maintains its performance even in humid environments, ensuring lasting luminous efficiency.

Question 14

Is the Cosmorrow Growing 20W LED bar in 6500K suitable for the growth phase in hydroponics and what is its electricity consumption compared to a conventional lamp?

Accepted Answer

The Cosmorrow Growing 20W LED bar in 6500K is perfectly suited for the growth phase in hydroponics. Its cool light spectrum at 6500K promotes the development of seedlings, cuttings, and young plants, ideal for vegetation. In terms of electricity consumption, this bar only consumes 20 watts, which is very low compared to conventional HID or HPS lamps often used in hydroponics, which typically range between 150W and 1000W. This allows for significant energy savings while providing effective lighting for growth.

Question 15

Is the Cosmorrow 20W LED bar compatible with a standard power supply or does it require a proprietary one?

Accepted Answer

The Cosmorrow Growing LED Bar 20W - 50cm requires a specific power supply from the Cosmorrow brand at 24V to operate correctly. It is not compatible with a standard power supply. This proprietary power supply is designed to provide a stable low voltage, suitable for the bar's modular and patented technology, ensuring uniform and reliable lighting. To power several bars, it is recommended to use a dedicated Cosmorrow power supply (for example, a 2x20W power supply) with separate parallel outputs. A series connection or using a standard power supply is not advised.

Question 16

Is the Cosmorrow 20W 50cm LED Bar effective for rooting in micro spaces with high humidity levels?

Accepted Answer

The Cosmorrow Growing 20W – 50 cm LED Bar is perfectly suited for rooting in micro spaces thanks to its cool white light at 6500K, ideal for stimulating vegetative growth and rooting cuttings. However, this model is not waterproof certified, so in an environment with a high humidity level, it is essential to ensure good air circulation to avoid any risk of overheating or damage. An effective ventilation system will allow you to fully utilize this LED bar while preserving its longevity. To optimize light coverage and manage humidity, it may be beneficial to complement the lighting with other suitable equipment available on GrowLED.

Question 17

What is the precise electrical consumption of the Cosmorrow Growing 20W LED bar over 1m² and the actual luminous efficiency for maximum indoor growth with 6500K?

Accepted Answer

The Cosmorrow Growing 20W - 50cm LED bar consumes precisely 20 watts under a 24V supply with a current of 0.83 A, ensuring stable and optimized performance. To cover 1 m², it is recommended to use two bars, totaling about 40W. The actual luminous efficiency is 48 µmol/s per bar for a 6500K spectrum, ideal for vegetative growth. Over 1 m² (with two bars), the total light output therefore reaches approximately 96 µmol/s, with an efficiency of 2.4 µmol/W, providing effective and low-energy lighting, perfect for maximum indoor growth.

Question 18

Is the passive heatsink really sufficient to avoid overheating during continuous use?

Accepted Answer

The passive heatsink of the Cosmorrow Growing 20W - 50cm LED Bar is designed for silent and efficient heat dissipation. It is generally sufficient for continuous use, provided the bar is installed in a well-ventilated environment, with no obstruction around the chassis. This metal design allows heat to dissipate without a fan, avoiding noise and wear. For indoor installation with moderate humidity, it ensures good thermal management, especially during growth or cutting phases. However, if multiple bars are installed in a confined or poorly ventilated space, additional airflow is recommended to prevent heat buildup. In summary, passive thermal management is suitable for the 20W power and guarantees no overheating during normal use, provided there is good ventilation.

Question 19

What is the luminous efficiency in lumens per watt of the Cosmorrow Growing 20W 50cm LED bar at 6500K and its electrical consumption compared to a traditional horticultural lamp for a growing space of 1.5m by 1.5m with an optimal growth goal and maximum energy savings?

Accepted Answer

The Cosmorrow Growing 20W - 50cm LED bar at 6500K delivers a spectrum specially suited for the growth phase, with an estimated photon efficiency (PPE) between 2 and 3 µmol/J, which is higher than traditional horticultural lamps like the 315W CMH.

Question 20

What is the light yield in micromoles per joule of the Cosmorrow Growing 20W 50cm LED bar at 6500K and how does this yield translate to plant growth over a cultivation area of 1.5x1.5 meters?

Accepted Answer

The Cosmorrow Growing 20W - 50cm LED bar at 6500K offers a light yield of approximately 2.4 μmol/joule. With a power consumption of 20W, it generates a total flux of 48 μmol/s.On a surface area of 1.5 x 1.5 meters (2.25 m²), this translates to a PPFD of approximately 21 μmol/m²/s, which remains low for optimal growth typically requiring between 100 and 300 μmol/m²/s. This bar is therefore ideal for supplementary lighting or for small crops, but insufficient on its own to effectively illuminate the entire surface.For a more suitable yield, it is recommended to use multiple bars or a more powerful lighting solution, especially if your plants require vigorous development under 6500K, a perfect spectrum for the growth phase.

Cosmorrow Growing 20W LED bar - 50cm

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