Generates a cool 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! 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