Mars Hydro 4 Inch Inline Exhaust Fan – 205 CFM Quiet Grow Tent Ventilation with Thermostat Controller

The Mars Hydro 4-Inch Inline Exhaust Fan (205 CFM) is a compact yet powerful ventilation solution for small and medium-sized grow tents where consistent air exchange, temperature control, and odor management are essential. This professional-grade 4-inch inline fan delivers a maximum airflow of 205 CFM at an exceptionally low noise level of only 26.8 dB , making it ideal for quiet indoor growing environments.

Whether you work with a 60×60 cm, 80×80 cm or 100×100 cm grow tent, this fan provides constant extraction, optimal air circulation and a stable microclimate during both vegetative growth and the flowering phase.

Thanks to the choice between a manual speed controller or a digital thermostat controller, you can control airflow and temperature fully automatically or manually. This makes the Mars Hydro 4-inch inline fan suitable for both beginner growers and advanced indoor growers who want maximum control over their growing environment.

Fully compatible with 4-inch carbon filters , making it perfect for effective odor control in closed indoor spaces.

Why Good Grow Tent Ventilation Is Crucial

A stable airflow prevents:

• Overheating of LED grow lights
• Build-up of moisture and mold formation
• Unstable VPD values
• Stagnant CO₂ supply
• Odor problems in indoor growing areas

With a reliable 205 CFM exhaust capacity, this fan provides constant air exchange essential for healthy root development, strong plant structure, and maximum yield.

Key Benefits

• 205 CFM powerful air circulation for constant and efficient air exchange
  
• Choice of speed controller or digital thermostat controller for precise control
  
• Extremely quiet operation (26.8 dB) – ideal for residential environments
  
• Stabilizes temperature and humidity during growth and flowering
  
• Compact 4-inch design – perfect for small and medium grow tents
  
• Energy-efficient, durable brushless motor with stable performance
  
• Compatible with standard 4-inch carbon filters for effective odor control
  
• Suitable for extraction systems, small indoor grows and complete grow tent ventilation

Perfectly Suitable For

• 60x60 cm grow tents
• 80x80 cm grow tents
• 100x100 cm grow tents
• LED growing setups up to ±300W
• Odor control with carbon filter
• Hobby growers and serious indoor growers

Technical Specifications

• Fan size: 4 inch
• Maximum airflow: 205 CFM
• Noise level: 26.8 dB-A
• Controller options: Speed ​​controller or digital thermostat controller
• Application: air freshening, odor control, temperature stability, grow tent ventilation
• Compatibility: Standard 4-inch exhaust ducts and carbon filters
• Motor: energy-efficient brushless motor
• Temperature control: precise automatic control (thermostat version)

Maximum Control, Minimum Energy

The brushless motor ensures:

• Lower power consumption
• Less heat development
• Longer lifespan
• Stable performance under continuous use

Ideal for 24/7 indoor growing without energy waste.

Why Amsterdam Grow Supplier

Amsterdam Grow Supplier selects top-quality ventilation solutions from brands like Mars Hydro: reliable, durable, and designed for optimal performance in indoor growing environments.

With fast delivery, expert support, and our Best Price Guarantee, we help every grower achieve a stable, efficient, and odor-free indoor growing environment.

At AGS you can shop with confidence every round, every harvest.