The Myco-Mister II Ultrasonic Tower Humidifier was designed for use with the BoomRoom II or with a Martha tent setup. Unlike traditional humidifiers, the Myco-Mister features 3 transducer plates to create an ultra-fine mist that improves mushroom quality and reduces blotch and other diseases. Its large 4.4 gallon capacity allows for days of humidity without needing to refill. And its automatic shut-off prevents motor damage when the reservoir is empty. Features: Flip top lid for easy refilling 16L water reservoir Dial for adjusting humidity levels Four wheels for easy moving Built-in automatic shut off Specs: Power: AC power adapter / 80 watts Voltage: 100-240V Capacity: 16 L Noise: <40 dB Output: Up to 350 sq ft. / 2000 ml per hour Important notice: Using tap water with a high mineral content (aka "hard water") with any humidifier can cause a fine white dust build to up and/or to be emitted. To avoid this, use distilled or demineralized water. Or, add a demineralization cartriege to the water tank. (This can be done by removing the top cover and placing the cartridge inside.)