Control Freak 3 Amp Dynamic Frequency Fan Speed Controller Media Check EC: Use the Truncheon

Check EC: Use the Truncheon to measure nutrient strength

Commercial-ready formula

making it incredibly easily to give your plants the perfect environment

they'll only get powered up whenever they're needed

helping it reach deeper into the substrate

Control Freak 3 Amp Dynamic Frequency Fan Speed Controller Media Check EC: Use the TruncheonPlease note: This item is purchase to order. Be a Control Freak! The Next Step Up From the Hybrid Fan Speed Controller! The Control Freak combines the best of both types of conventional fan speed controller giving you the quietness and smooth output of a hybrid type while giving you the controllability of a standard pulse width modulation (PWM) type. Standard fan speed controllers produce a spiky waveform which usually introduces a hum in the fan