MARS HYDRO 4 INCH INLINE DUCT FAN AND CARBON FILTER COMBO WITH SPEED CONTROLLER Air Purification The system draws cool air

The system draws cool air in from the bottom vents

Calcium and magnesium are two of the macro elements that are significant to plants' growth and development

Platform Fittings

Each ballast also comes with an 8-foot power cord with plug

Athena CaMg is designed to supplement either of our 2-part liquid formulas

MARS HYDRO 4 INCH INLINE DUCT FAN AND CARBON FILTER COMBO WITH SPEED CONTROLLER Air Purification The system draws cool airWith 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"