Reflective walls around the growing area
The reflective lining returns some light into the enclosure. It complements your chosen light; it does not guarantee a yield increase or a reflectance percentage for your setup.
Secret Jardin·Dark Room - PRO Range (Medium space)
Secret Jardin Dark Room DR240W R4.00 – grow tent 237 × 120 × 200 cm
5.0
Réf. DARK-ROOM 240W Secret Jardin
Secret Jardin Dark Room DR240W R4.00 – grow tent 237 × 120 × 200 cm
237 × 120 × 200 cm 2.84 m² (nominal… 31.7
Secret Jardin Dark Room DR240W R4.00, 237 × 120 × 200 cm: 2.84 m² nominal footprint. Access from several sides to organise lighting and maintenance. Lighting and ventilation sold separately.
GrowLED since 2009
French group · indoor growing expertise
Pay in instalments
3 or 4 payments from €50 with Alma, subject to eligibility
24h express available
After dispatch, if offered at checkout
Showroom near Nancy (54)
Au Palétuvier · Champigneulles
Secret Jardin Dark Room DR240W R4.00...
559,00 €
Parraine tes proches
5 % pour toi & 5 % pour ton ami
Description
Product presentation
Secret Jardin Dark Room DR240W R4.00Your growing space.
Your growing space.
2.84 m² of floor space.
Secret Jardin Dark Room DR240W R4.00 · 237 × 120 × 200 cm. Access from several sides to organise lighting and maintenance. Add lighting, extraction, air circulation, a filter if needed, pots and growing medium separately.
Mylar M400D237 × 120 × 200 cmEquipment sold separately
2.84 m²Nominal footprint
200 cmTotal assembled height
400 DReflective fabric
25 mmPole diameter
Before you choose
237 × 120 cm: leave room for access.
Measure the floor space, ceiling and access routes. Leave room for doors, ducts and connectors so you can water, move pots and tend plants.
Total height includes pots, the light and its hangers. Also allow for the light-to-plant distance specified by the lighting manufacturer.
Hanging load : 25 kg per bar · 125 kg total, distributed Distribute loads across the intended bars and include devices, cables and fixings. A hanging limit does not authorise hanging filled reservoirs.
What is included
Cover and frame, 5 hanging bars, 1 removable tray(s); 2 DF25 · 2 connectors Ø 200 mm. Plant support net(s) and Space Booster wall supports included.
What you need to add
Add lighting, extraction, air circulation, a filter if needed, pots and growing medium separately.
Check my setup →Useful details
Details that shape your setup
Access from several sides to organise lighting and maintenance.
Choose where the openings go
Ducting Flange supports let you position air openings to suit your layout. Fit the support and use the cutting tool as instructed: it creates openings, not a different-sized tent. 2 DF25 · 2 connectors Ø 200 mm
An accessible base for cleaning
The removable tray catches small spills and helps with cleaning. It is not a reservoir, and the tent must not be filled with water.
Getting started
Assemble, equip, then check
01
Assemble the frame and cover
Follow the instructions for this model. Check joints, open the zips needed to fit the cover and do not force the zips.
02
Position equipment with enough clearance
Follow documented load limits, mounting points and lighting clearances. Keep electrical connections away from watering areas.
03
Test airflow with equipment running
Connect suitable extraction and provide an air inlet. Check temperature and humidity at several points, then adjust air renewal and circulation.
Simple access for maintenance
Unplug equipment before maintenance. Remove debris and spills, clean surfaces as directed by the manufacturer, then let them dry. Check zips, joints and the fixings of suspended loads.
Compare the essentials
Specifications: Dark Room DR240W R4.00
Specifications for the documented version. Area and volume are calculated from nominal dimensions; equipment and access space have not been subtracted.
| Assembled dimensions | 237 × 120 × 200 cm |
|---|---|
| Nominal footprint | 2.84 m² nominal |
| Nominal volume | 5.69 m³ |
| Reflective fabric | Mylar M400D |
| Pole diameter | Ø 25 mm |
| Net weight | 31.7 kg |
| Hanging load | 25 kg per bar · 125 kg total, distributed |
| Ventilation openings | 2 DF25 · 2 connectors Ø 200 mm |
| Cable openings | 3 × CF7 |
| Growing equipment | Add lighting, extraction, air circulation, a filter if needed, pots and growing medium separately. |
| Floor tray | 1 removable tray(s) |
Manufacturer sources: Manufacturer documentation · Further manufacturer document · Further documentation
Compare Secret Jardin grow tents →Before buying
A question about your setup?
Dimensions, ventilation and hanging loads are covered in the questions on this page. To check a particular device, send us its model and dimensions.
Read the questions and answers →Access from several sides to organise lighting and maintenance.
Check available space, hanging loads and the equipment you need to add before ordering.
Technical data sheet
Features detailed
| Dimensions | 237 × 120 × 200 cm |
|---|---|
| Growing area | 2.84 m² (nominal footprint) |
| Weight (kg) | 31.7 |
| Mylar density | M400D |
| Max load (kg) | 125 (25 per bar) |
| Tube diameter (mm) | 25 mm |
| Volume (m³) | 5.69 m³ nominal |
| Max load per tube (kg) | 25 |
Convinced? Shipped from France. Add to cart — 559,00 €
They've adopted it
Reviews customers
Achat vérifié
Je n'y connais pas grand-chose, mais monter cette tente a été très simple. La toile épaisse apporte une vraie impression de qualité. Après quelques jours, l'ambiance intérieure semble bien stable, sans trop d'ajustements. Cette lampe semble vraiment efficace et fiable, je recommande !
Achat vérifié
Top, super robuste, montage rapide.
Achat vérifié
Super solide cette box ! Montage nickel, rien qui bouge. Le Mylar renvoie vraiment bien la lumière, ça booste tout. Je kiffe surtout l'opacité, zéro lumière qui passe, parfait pour gérer l'ambiance. Le prix vaut le coup pour la qualité proposée.
Achat vérifié
Nickel
Très satisfait.
Achat vérifié
Reçu rapidement, bien
Reçu rapidement, bien emballé. Fonctionne parfaitement. Vraiment satisfait.
Achat vérifié
Parfait
Génial !
Aucun avis ne correspond à ce filtre.
Frequently asked questions
Your questions
What is the precise electrical consumption in kWh for a full season when using 2 LED panels of 465 W in the Dark Room 4.0 240 W?
Two 465 W panels total 930 W, or 0.93 kWh per hour at full output. At 12 h/day for 30 days: 334.8 kWh for lighting only; at 18 h/day: 502.2 kWh. Season duration, dimming and ventilation must also be included. Use your actual electricity tariff.
Does the reflective Mylar M400D fabric guarantee sufficient thermal insulation to prevent excessive heating inside the cabinet during periods of intense winter heat?
Dark Room DR240W R4.00 provides no heating and is not a certified thermally insulated room. In winter, check room and incoming-air temperatures, especially at night. Heating, lighting and dehumidification needs depend on plants and the building. Added equipment must meet manufacturer clearances, fixing requirements and operating conditions.
Dark Room DR240W R4.00 has 2 DF25 · 2 connectors Ø 200 mm. These are openings, not built-in fans. Arrange the inlet and exhaust so fresh air does not immediately leave again, and provide suitable circulation around the foliage. Size actual airflow with the filter, bends and duct length in mind; check temperature and humidity, including after lights switch off. Air renewal cannot cool the enclosure below incoming-air temperature. Manufacturer configuration reference: 650 m³/h extraction with a filter. This is a sizing example, not measured installed flow or a VPD guarantee; adapt it to actual equipment and climate.
Can we optimize the ventilation under LED by adjusting the recommended air flow rates (340 m³/h extractor and 170 m³/h intake) to limit thermal stress and maximize the efficiency of the Mylar M400D in this dark room 4.0 237x120x200cm?
M400D is not a measured reflectance percentage or a thermal/acoustic insulation rating. There is no PPFD, light-loss or comparative-yield test for your setup in the Dark Room DR240W R4.00. Compare light PPFD maps at the intended distance and keep the walls clean. The lining neither heats the space nor removes lighting heat, and it does not guarantee yield.
For 237 × 120 cm, choose lighting by plant needs, its PPFD map at the intended height, dimensions and required clearances. Tent size alone does not establish a maximum wattage. Watts certify neither hanging capacity nor a stable temperature; add suspended masses and test heat with equipment running. Without a specific light and measurement protocol, no PPFD or g/W increase can be given.
Is it compatible with hydroponic systems included or does it require an additional kit for complete installation?
A hydroponic system can stand on the floor if it and its maintenance access fit 237 × 120 × 200 cm. Add the reservoir, pump, irrigation and controls separately. Check filled-reservoir load on the room floor, remaining height under lighting and drainage access. A tent tray is not a reservoir or a guarantee against leaks; the enclosure does not regulate pH or humidity.
Cover and frame, 5 hanging bars, 1 removable tray(s); 2 DF25 · 2 connectors Ø 200 mm. Plant support net(s) and Space Booster wall supports included. Add lighting, extraction, air circulation, a filter if needed, pots and growing medium separately. An equipped illustration does not mean the devices are included. Check the offer contents before selecting a kit.
What extractor do you recommend to maintain an optimal VPD in the Dark Room 237x120x200cm with 2 LED panels of 465W?
Dark Room DR240W R4.00 has 2 DF25 · 2 connectors Ø 200 mm. These are openings, not built-in fans. Arrange the inlet and exhaust so fresh air does not immediately leave again, and provide suitable circulation around the foliage. Size actual airflow with the filter, bends and duct length in mind; check temperature and humidity, including after lights switch off. Air renewal cannot cool the enclosure below incoming-air temperature. Manufacturer configuration reference: 650 m³/h extraction with a filter. This is a sizing example, not measured installed flow or a VPD guarantee; adapt it to actual equipment and climate.
What practical difference does the Mylar M400D fabric bring compared to a classic fabric in hydroponic cultivation?
M400D is not a measured reflectance percentage or a thermal/acoustic insulation rating. There is no PPFD, light-loss or comparative-yield test for your setup in the Dark Room DR240W R4.00. Compare light PPFD maps at the intended distance and keep the walls clean. The lining neither heats the space nor removes lighting heat, and it does not guarantee yield.
What is the exact value of the reflectance factor of the Mylar M400D fabric measured in % and its impact on the lumens per watt available in practice in this Dark Room 4.0 240 W?
M400D is not a measured reflectance percentage or a thermal/acoustic insulation rating. There is no PPFD, light-loss or comparative-yield test for your setup in the Dark Room DR240W R4.00. Compare light PPFD maps at the intended distance and keep the walls clean. The lining neither heats the space nor removes lighting heat, and it does not guarantee yield.
For 237 × 120 cm, choose lighting by plant needs, its PPFD map at the intended height, dimensions and required clearances. Tent size alone does not establish a maximum wattage. Watts certify neither hanging capacity nor a stable temperature; add suspended masses and test heat with equipment running. Without a specific light and measurement protocol, no PPFD or g/W increase can be given.
What is the maximum loading capacity in LED lamps to optimize heat distribution without compromising light output in the Dark Room 237x120x200cm R4.00?
The documented limit for Dark Room DR240W R4.00 is 25 kg per bar · 125 kg total, distributed. Lamp watts and extractor m³/h do not indicate weight: add the masses of equipment, cables, hangers and accessories. Spread them across the intended bars without exceeding any limit. Do not hang a filled reservoir or use improvised reinforcement to increase capacity.
For 237 × 120 cm, choose lighting by plant needs, its PPFD map at the intended height, dimensions and required clearances. Tent size alone does not establish a maximum wattage. Watts certify neither hanging capacity nor a stable temperature; add suspended masses and test heat with equipment running. Without a specific light and measurement protocol, no PPFD or g/W increase can be given.
Is the installation still as easy and quick when adding a complete hydroponic system inside?
A hydroponic system can stand on the floor if it and its maintenance access fit 237 × 120 × 200 cm. Add the reservoir, pump, irrigation and controls separately. Check filled-reservoir load on the room floor, remaining height under lighting and drainage access. A tent tray is not a reservoir or a guarantee against leaks; the enclosure does not regulate pH or humidity.
The Dark Room DR240W R4.00 manual sets out assembly order; no maximum time or solo assembly is guaranteed here. Sort parts, clear the work area and follow the frame diagram first. Open the required zips before fitting the cover without force, then check all joints. Get help for large models and remove all equipment before moving the tent. Plant growth depends on species and conditions, not assembly time.
box 237x120x200cm, is the recommended ventilation (680m3h extractor) sufficient to avoid overheating with 2 leds 465w in a micro space?
Dark Room DR240W R4.00 has 2 DF25 · 2 connectors Ø 200 mm. These are openings, not built-in fans. Arrange the inlet and exhaust so fresh air does not immediately leave again, and provide suitable circulation around the foliage. Size actual airflow with the filter, bends and duct length in mind; check temperature and humidity, including after lights switch off. Air renewal cannot cool the enclosure below incoming-air temperature. Manufacturer configuration reference: 650 m³/h extraction with a filter. This is a sizing example, not measured installed flow or a VPD guarantee; adapt it to actual equipment and climate.
What is the best strategy to manage multiple plant varieties with different light needs in the same Dark Room 4.0 240 W?
Plants with compatible needs can share Dark Room DR240W R4.00, but separate lights or timers do not create light- and air-isolated zones. Group plants by height, photoperiod and climate needs, leaving room for airflow. For truly different dark periods or climates, use purpose-designed separate enclosures or partitions with suitable ventilation; do not cut the cover to improvise two tents.
What are the noise levels generated by the ventilation recommended for a Dark Room 237x120x200 and respective extractors of 680 m3/h and 340 m3/h?
The Dark Room DR240W R4.00 tent has no documented acoustic rating. Noise depends on the extractor, its speed, ducts and transmitted vibration. Use compatible connections (2 DF25 · 2 connectors Ø 200 mm), avoid unnecessary bends and use intended fixings. For odours, match a carbon filter to actual airflow and avoid leaking connections; reducing airflow too far can allow heat and humidity to build up.
What ventilation management do you recommend to maintain an optimal humidity level in this large Dark Room cabinet 237x120x200 cm with 465 W LEDs?
Dark Room DR240W R4.00 has 2 DF25 · 2 connectors Ø 200 mm. These are openings, not built-in fans. Arrange the inlet and exhaust so fresh air does not immediately leave again, and provide suitable circulation around the foliage. Size actual airflow with the filter, bends and duct length in mind; check temperature and humidity, including after lights switch off. Air renewal cannot cool the enclosure below incoming-air temperature. Manufacturer configuration reference: 650 m³/h extraction with a filter. This is a sizing example, not measured installed flow or a VPD guarantee; adapt it to actual equipment and climate.
How to integrate voice control to manage ventilation, lighting, and watering in Secret Jardin's Dark Room 4.0?
Dark Room DR240W R4.00 is a passive enclosure: it has no built-in connected sensor, app or voice control. You can add mutually compatible sensors and controllers, use the intended cable openings and check wireless coverage. Control of lighting, extraction and irrigation depends on equipment interfaces, not the tent. WebIT is a plant support net, not a home-automation system.
Can we optimize air circulation in the dark room 237x120x200cm R4 00 for a dense SCROG under 465W LED without compromising the box's tightness?
Dark Room DR240W R4.00 has a nominal footprint of 2.84 m². A plant support net or training setup must leave access for watering, openings and air above and below the foliage. A bar’s vertical load rating does not certify lateral net tension. For dense planting, choose lighting by its actual coverage and check climate at several points; the tent alone does not guarantee yield.
Dark Room DR240W R4.00 has 2 DF25 · 2 connectors Ø 200 mm. These are openings, not built-in fans. Arrange the inlet and exhaust so fresh air does not immediately leave again, and provide suitable circulation around the foliage. Size actual airflow with the filter, bends and duct length in mind; check temperature and humidity, including after lights switch off. Air renewal cannot cool the enclosure below incoming-air temperature. Manufacturer configuration reference: 650 m³/h extraction with a filter. This is a sizing example, not measured installed flow or a VPD guarantee; adapt it to actual equipment and climate.
Not seeing your question?
Your browsing
Viewed recently
Related articles
Discover the complete Secret Jardin packs - The Original 60 GR60 and For Twenty 100 FS100GrowLED positions itself as a key player in the indoor growing ecosystem, highlighting quality and innovation. In...
Read more
