Air purification by water, The way of nature.
    Change water= Change filter.
    Really healthy air.
    No by-products, no secondary pollutions.
    Pure natural negative oxygen ions, 12000/cm3.
    Not just an air purifier.
    Pure natural evaporation method, automatic adjustment according to the room humidity.
    Save more than just water.
    Used water= Watering plant, flush toilet, save 75% filter cost.
    Good things are not necessarily expensive.