Water level sensor: If the water level is too low, the ultrasonic mist maker can automatically stop working. Filter unpleasant odorsThe ultrasonic fogger smoke can add a large amount of mist to your pond or water tank to filter bad smells through ultrasonic technology. Interchangeable Spray TabletsAt the same time, this ultrasonic maker can replace the spray tablets and we also provide you with two spray tablets. Create a better atmosphereYou can place it in your pond, rockery, aquarium, vase, tank, etc. It will create a magical atmosphere. Especially perfect for Halloween and other holidays. More Mist: Our pond atomizer can provide more mist than other mist machines. Aerosol quantity 400 ml/h.