In need of an Ultrasonic humidifier that is stylish, powerful and AFFORDABLE? Take a close look at Hydra. Its elegance and appearance fit to your home. The large stylish transparent water tank contains 1.6 gallon. It also includes a demineralization cartridge to avoid white dust. And the patented Ionic Silver Cube, inhibiting the growth of mold bacteria. Including hygrostat and mist output regulator for controlled humidification.