Exo Terra Fogger (Mist Maker)Exo Terra Ultrasonic Fog Generator. Generates a cold mist in all types of terrariums. Ideal for increasing humidity levels and creating a natural misty and damp environment. Operates in any water part (e. g. Exo Terra Water Dishes, Waterfalls, etc.) as shallow as 5 cm! Key Features : Increases air humidity levels up to 100% Great visual effect Simulates low clouds and fog in the tropical terrariums Generates early morning dew in desert terrariums