Feature: 1. IONISATION TECHNOLOGY: The aquarium ozone generator uses ionisation technology to produce ozone to cover and clean the tank, break down nitrites and restore clear water. 2. EASY TO USE: Aquarium ozonizer cannot be used in water and needs to be used with an air pump and hose. For continuous use, turn off when the water is clear and turn on again when the water becomes bad. 3. DECONTAMINATION: Fish tank air water ozonator releases high concentrations of active oxygen every minute, actively decomposing odours, formaldehyde, nitrite and other harmful substances, quickly solving pollutants from the source. 4. PRECAUTIONS: Aquarium ozone generator continuously maintains the water quality in the tank. It is recommended for ventilation and can be adjusted for use according to water quality. 5. ADJUSTING SETTINGS: Water quality is generally adjusted to a middle value of 5. To avoid water backing up in the tank, it is recommended to place the ozonator 7.9 inches above the tank level. Specification: Item Type: Fish Tank Ozone Generator Material: ABS, Stainless Steel Use: Aquarium Ozone Machine Air Pump, Water Purification, Algae Removal Ozone Machine. Rated Power: 6W Ozone Capacity: 120MG Air Pump. Rated Power: 8W Maximum Gas Volume: 2 x 3.5L/Min. Package List: 1 x Fish Tank Ozone Generator 1 x Air Pump 2 x Hose 1 x Check Valve2 x Air Bubble Stones 1 x Air Pump Manual