Increase your tanks humidity with Zoo Meds new Reptile Foggerâ„¢, a Compact Ultrasonic Humidifying Fogger with adjustable fog output control. This unit comes ready to operate. It includes a one liter bottle and all the necessary fittings. It also features a no-spill" valve making it easy to remove and refill the water bottle. Use the Reptile Foggerâ„¢ in conjunction with Zoo Meds HygroThermâ„¢ Humidity and Temperature Controller for precise humidity and temperature control."