MARS HYDRO 4 INCH INLINE DUCT FAN AND CARBON FILTER COMBO WITH SPEED CONTROLLER pumps-and-irrigation-supplies This product’s specialized media density

This product’s specialized media density promotes faster and

Not only that

deep red 660nm) with higher red diodes ratio

replaceable pH electrode cartridge

MARS HYDRO 4 INCH INLINE DUCT FAN AND CARBON FILTER COMBO WITH SPEED CONTROLLER pumps-and-irrigation-supplies This product’s specialized media densityWith a 4'' inline fan rated for 205CFM, an activated carbon filter with Australian charcoal, and a knob controller applied to allow easy switching and adjustment of the fan speed, the Mars Hydro 4 inch inline duct fan and carbon filter combo offers you everything you need to set up the ventilation in a grow tent. A good ventilation setup for grow tents measuring up to 3x3 feet. Package Includes: 4" Inline Duct Fan with a knob Speed Controller, 4"