Control Freak 3 Amp Dynamic Frequency Fan Speed Controller Media Mount the fan inline between

Mount the fan inline between your ducting and the filter

giving you control over airflow and noise depending on your setup

plant-derived vegetative feed for soil

at a price point that makes sense for growers scaling up

and that six-week nutrient window

Control Freak 3 Amp Dynamic Frequency Fan Speed Controller Media Mount the fan inline betweenControl Freak 3 Amp Dynamic Frequency Fan Controller Quiet, 90 Speed Fan Control Best for: growers running one or two extraction or circulation fans who want smooth, buzz free speed control with automatic temperature based operation. Our thoughts Most cheap fan controllers either buzz at low speed or only give you a handful of usable settings. Control Freak fixes both problems by adjusting the frequency of the supply rather than chopping the voltage,