Question 1

Does the Dark Room 240 4.0 provide sufficient thermal insulation for winter cultivation?

Accepted Answer

Yes, the Dark Room 240 4.0 offers good thermal insulation thanks to its highly reflective mylar interior and its high-density outer fabric. However, for winter cultivation, it is advisable to add a supplementary heat source to maintain an optimal temperature inside the tent. The tent will limit heat loss and thus, maximize the efficiency of your additional heating.

Question 2

Is the ventilation sufficient with only the 2 included ducting flanges to maintain an ideal temperature under 1600W LED PE 2.7 in this 11.2m3 space?

Accepted Answer

The Dark Room 240x240x200cm R4.00 is perfectly designed for indoor growing, but with a 1600W PE 2.7 horticultural LED in a volume of 11.2 m³, the two included ducting flanges may not be sufficient to maintain an ideal temperature. Such LED power generates a lot of heat, and to prevent overheating, it is essential to ensure good air exchange, ideally a complete renewal every 1 to 2 minutes.We recommend adapting the ventilation by adding a powerful extractor and possibly additional flanges to facilitate the intake and outtake of air. This will allow for effective heat management and ensure an optimal environment for your cultivation.

Question 3

What is the optimal ventilation management with the Ducting Flange system to balance air circulation and limit temperature variations in the Dark Room 240 4.0?

Accepted Answer

For optimal ventilation of the Dark Room 240x240x200cm R4.00 with the Ducting Flange system, it is essential to create an effective vertical air flow: place the fresh air intake at the bottom on one side and the hot air extraction at the top on the opposite side. Use the two lower openings for fresh air intake and the two at the top for exhaust, connecting ducts and extractors directly to the Ducting Flanges to ensure a perfect seal. Select a powerful extractor suited to the volume, around 1000 m³/h for LED, and add an internal fan to homogenize temperature and humidity. Finally, adjustable ventilation flaps allow for modulation of the airflow and limit thermal variations, thus ensuring a stable climate conducive to the growth of your plants.

Question 4

What is the best method to limit noise and odors while maintaining effective ventilation with this Dark Room 240 4 0?

Accepted Answer

To limit noise and odors while maintaining effective ventilation in the Dark Room 240x240x200cm R4.00, it is essential to combine well-thought-out ventilation with suitable accessories. Use an extractor with a flow rate suited to the volume of the box, ideally equipped with a speed controller to reduce noise as needed. Place the air intake and exhaust on opposite sides for optimal airflow. To mitigate noise, favor soundproof ducting and hang the extractor on elastic supports to absorb vibrations. For odors, an activated carbon filter is essential on the extraction and should be changed regularly. Ensure that all openings in the box are perfectly sealed to prevent any odor leaks. Finally, organizing cables and ducts using clips allows air to circulate unobstructed, optimizing ventilation and reducing noise. This harmonious approach ensures an ideal, quiet, and healthy environment for your indoor crops.

Question 5

What is the optimal ventilation to maintain stable temperature and humidity in this Dark Room 240 4 0 of 11.2m³ under micro LED PE 2 7 growing?

Accepted Answer

For the Dark Room 240 x 240 x 200 cm of 11.2 m³, optimal ventilation will require an extractor fan with a flow rate of about 300 to 350 m³/h, ensuring 5 to 6 air changes per hour. Place the air intake and exhaust on opposite walls to ensure uniform circulation and avoid hot or humid spots.Opt for an extractor with a variable EC motor, which provides precision, quiet operation, and longevity. Use the built-in Light Baffle for passive air intake without light loss. Complement with a small oscillating fan to homogenize humidity and enhance plant health.Finally, depending on your needs, a carbon filter at the extractor's outlet is recommended to limit odors and purify the air.

Question 6

What are the practical advantages of 360-degree openings for managing multiple varieties in the Dark Room 240 4.0?

Accepted Answer

The 360° openings of the Dark Room 240x240x200 cm R4.00 allow complete access to all growing areas, thus facilitating the maintenance of multiple varieties without moving the plants. This design optimizes space management, simplifies the installation and maintenance of equipment, and improves air circulation for a better-controlled microclimate. It is a major asset for cultivating different plants with specific needs in the same space.

Question 7

What is the impact of the Ducting Flange system on the optimization of ventilation and humidity control in the Dark Room 240 4.0 compared to a standard tent without this system?

Accepted Answer

The Ducting Flange system of the Dark Room 240x240x200cm R4.00 optimizes ventilation by offering placement flexibility for ventilation openings, which facilitates ideal vertical air circulation (low intake, high extraction). This direct connection to extractors ensures perfect sealing, reducing air leaks, an advantage hard to achieve with a standard tent.For humidity control, this better air circulation stabilizes temperature and humidity, creating a more consistent environment. The adjustable flaps of the system allow for precise modulation of airflow, thus limiting the climatic fluctuations often encountered in tents without this device.In summary, this system significantly improves climate regulation and ventilation efficiency compared to a standard tent without Ducting Flange.

Question 8

Can a secondary independent ventilation system be installed in this grow box to run two crops in parallel without adding a second tent?

Accepted Answer

It is indeed possible to install a secondary independent ventilation system in the Dark Room 240x240x200cm R4.00 to run two crops in parallel without adding a second tent. The tent offers several openings and ventilation rings to adapt different equipment.However, this use requires creating an airtight internal separation between the two growing spaces, as well as careful management of airflows to avoid mixing environments. This solution requires specific modifications, as the tent is not originally designed to be divided into two independent zones.For optimal installation, an internal insulating partition should be planned and ventilation organized accordingly. Thus, this technical configuration is achievable but more complicated than using two separate tents, which remains the simplest and most reliable solution.

Question 9

What is the actual resistance of the stainless steel structure to moisture and corrosion in the long term in a humid growing environment?

Accepted Answer

The stainless steel structure of the Dark Room 240x240x200cm R4.00 is particularly well-suited to the humid environments of indoor cultivation. Thanks to its rich chromium composition (at least 10.5%), stainless steel forms a protective passive layer that makes it highly resistant to corrosion and moisture over the long term. This resistance allows the structure to maintain its strength and integrity even after several years of repeated exposure to a humid climate, without noticeable alteration. For optimal durability, regular maintenance is advised, but the quality of the stainless steel ensures long-lasting reliability in your growing space.

Question 10

What ventilation power do you recommend to maintain a stable climate in the Dark Room 240 4.0 with LED lighting PE 2.7 level III?

Accepted Answer

To maintain a stable climate in the Dark Room 240 x 240 x 200 cm R4.00 tent equipped with LED lighting PE 2.7 level III, it is recommended to opt for a ventilation of at least 400 CFM (about 680 m³/h). This power will allow you to effectively extract the heat generated by the powerful lighting, while ensuring good air renewal to stabilize temperature and humidity, essential conditions for optimal cultivation.

Question 11

What is the best ventilation setup to optimize temperature and humidity control in the Dark Room 240 4.0 during the simultaneous cultivation of multiple demanding varieties?

Accepted Answer

To optimize ventilation in the Dark Room 240x240x200cm R4.00 for cultivating several demanding varieties, place the fresh air inlet at the bottom on one side and the hot air extraction at the top on the opposite side. Use both lower openings for air intake and both upper ones for extraction, directly connecting the ducts to the ventilation flanges for perfect sealing. Choose an extractor of about 1000 m³/h suitable for the volume, and add an internal oscillating fan to homogenize temperature and humidity. Adjust the ventilation shutters to stabilize the climate. Also, consider limiting noise and odors with a carbon filter and soundproof ducts, ensuring that all openings are well sealed. This system ensures precise climate control, essential for maximizing the health and productivity of all your plants in this large space.

Question 12

For the Dark Room 240 4.0, do the STRAPITT straps support a standard 250mm carbon filter without any problems?

Accepted Answer

The Dark Room tent 240x240x200cm R4.00 has robust STRAPITT straps, but there is no precise data on their ability to support a standard 250 mm carbon filter (which typically weighs between 3 and 10 kg). The stainless steel structure is solid, and the tent offers several attachment points, however, to ensure a safe and stable installation, it is advisable to provide an additional fastening system suitable for the weight of your filter.

Question 13

Does the Ducting Flange system allow for easy installation of silent extractors to reduce noise in a confined space?

Accepted Answer

The Ducting Flange system of the Dark Room 240x240x200cm R4.00 is perfectly designed to simplify the installation of extractors, including silent ones, in confined spaces. The two 250 mm diameter ventilation sleeves with a standard connector can be positioned wherever you like, thus facilitating the quick and stable connection of extraction ducts. This modularity not only allows for easy mounting but also excellent noise management thanks to the use of silent extractors.

Question 14

How long does it take to set up the Dark Room 240 4.0 solo without struggling?

Accepted Answer

To set up the Dark Room 240 4.0 from Secret Jardin solo without major difficulties, expect about 1h30 to 2h. Its sturdy stainless steel structure and 360° openings greatly facilitate access and installation. With the detailed instructions and provided videos, as well as the right tools (like a T25 screwdriver), the operation remains entirely feasible for an average DIY enthusiast.

Question 15

Is the recommended ventilation of 900m³/h too high for 11m³ of volume? Do you think it is really necessary to avoid overheating and humidity, or can we reduce the flow rate in case of good internal management?

Accepted Answer

For your tent Dark Room 240x240x200cm, with a volume of about 11.5 m³, a 900 m³/h extractor is indeed powerful compared to actual needs. Generally, an air exchange of 20 to 30 times per hour is sufficient, which means a flow rate between 230 and 350 m³/h.If you are using LED lighting and temperature and humidity management is well controlled (with internal fans for circulation), an extractor around 300 to 400 m³/h will be well suited to avoid overheating and stagnant humidity.However, a higher flow rate offers a nice safety margin, especially in case of heat or humidity peaks.You can therefore reduce the flow rate if your internal setup is optimized, without risk to the quality of the crop.

Question 16

Is the stainless steel structure strong enough to support heavy suspended hydroponic systems in this Dark Room 240?

Accepted Answer

The stainless steel structure of the Dark Room 240x240x200cm R4.00 is made with 25 mm diameter tubes, recognized for their exceptional strength and durability. This "indestructible" design is specially designed to support heavy loads, which perfectly includes suspended hydroponic systems. You can therefore confidently install your setup, even if it is weight-intensive.

Question 17

What is the maximum photosynthesis yield I can expect with a 1600W LED PE 2.7 in this tent without overheating if I use the recommended ventilation?

Accepted Answer

With a 1600W LED PE 2.7 in the Dark Room 240x240x200cm, you generate a high photosynthetic flux of about 4320 µmol/s, ideal for intensive cultivation on an area of 5.76 m². To avoid overheating, it is essential to install efficient ventilation, with air extraction between 400 and 600 m³/h, which allows maintaining the temperature around 24-28°C, ideal for photosynthesis. Under these conditions, and with optimal management of cultural factors, you can expect a final yield of about 1 to 1.5 g/W, or between 1.6 kg and 2.4 kg per cycle for this tent.

Question 18

What are the concrete feedbacks on the durability of the ultra-resistant fiber coating and the strength of the welds on the stainless steel structure after several months of intensive use?

Accepted Answer

The Dark Room 240x240x200cm R4.00 from Secret Jardin features an ultra-resistant 600D mylar fabric covering, double stitched, which offers excellent waterproofing, abrasion resistance, and humidity resistance, designed for intensive use. Its 0.25 mm thick stainless steel structure is particularly robust, with careful welds that withstand repeated setups and handling.If no specific user feedback over several months is available, the quality of the materials and the technical design ensure a very satisfactory longevity, even under intensive conditions.

Question 19

What is the performance of the Ducting Flange ventilation in managing humidity and temperature for an optimal extraction cycle at 900m3/h in this Dark Room 240 4.0?

Accepted Answer

The Ducting Flange ventilation integrated into the Dark Room 240x240x200cm R4.00 offers very effective management of humidity and temperature thanks to a hermetic connection to extraction and intake ducts. With a suitable extractor around 900 m³/h, close to the recommended flow rate of 1000 m³/h for this volume, this system allows optimal airflow: fresh air enters through the lower openings and warm air is extracted at the top, thus avoiding any stagnation.Combined with an internal oscillating fan to homogenize the atmosphere, this extraction cycle ensures a stable climate, essential for plant health and growth. The adjustable ventilation flaps and good sealing ensure precise control of humidity and temperature, with the option of integrating a carbon filter to limit noise and odors without compromising efficiency.In summary, this ventilation system is perfectly suited for an optimal extraction cycle in the Dark Room 240 R4.00, providing an ideal indoor environment for your indoor crops.

Waterproof	No
Dimensions	237cm x 237cm x 200cm
Growing area	5.76
Weight (kg)	32-38
Compatibility	éclairages HPS 600W, ventilateurs via Ducting Flanges, accessoires Secret Jardin
Mylar density	M400D
Hanging bars	9
Ventilation opening diameter (mm)	250
Included accessories	2 WebIT240w, 4 flanges, plateau eau
Max load (kg)	25
Tube diameter (mm)	25
Number of plants	15-20
Volume (m³)	5.7
Capacity (w)	4x HPS 600W

Secret Jardin Dark Room DR240 R4.00 – grow tent 240x240x200 cm

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