Mars Hydro 4" Inline Duct Fan and Carbon Filter Combo with Temperature and Humidity Controller Hydroponics Apply for 2-3 waterings straight

Apply for 2-3 waterings straight then regain normal nutrient feedings

• For Hydro-seed and Over-seeding Applications Out in the Field

Includes 2 Boxes Of 12 Each

Unlike synthetic alternatives

This makes for easier spreading

Mars Hydro 4" Inline Duct Fan and Carbon Filter Combo with Temperature and Humidity Controller Hydroponics Apply for 2-3 waterings straightDescription Ventilation System Includes: 4" Inline Duct Fan, 4" Carbon Filter, Thermostat Controller, 25 ft Flexible Duct Tube, 3 Duct Clamps, and 2 Hanging Straps. Smart Operation and Quiet Inline Fan: The Mars Hydro 4 inch inline fan features a PWM controlled EC powered motor and mixed flow design, delivering airflow up to 205 CFM quietly. Controlled by a digital touch screen thermostat controller with a sensor probe, it offers functions such as