Feature: 1. Water Purification: Fish tank ozone generator uses ionization technology to generate ozone to cover and clean the fish tank, decompose nitrite, and restore clear water. 2. Continuous Use: Ozone machine cannot be used in water, it needs to be used with an air pump and hose. Continuously use, turn off if the water is clear and turn on again when the water deteriorates. 3. Release Oxygen: It releases high concentration of active oxygen every minute, actively decomposes harmful substances such as odor formaldehyde nitrite, quickly solves pollutants from the source. 4. Ventilation Use: Fish tank air water ozonator continuously maintains the water quality in the tank. It is recommended used for ventilation and can be adjusted and used according to the water quality. 5. Note: Water quality is generally adjusted to the middle value of 5. In order to avoid the backflow of the water in the fish tank, it is recommended to place the ozone machine 7.9in above the level of the fish tank. Specification: Item Type: Fish Tank Ozone Generator Material: ABS, Stainless Steel Uses: Aquarium ozone machine air pump clean, water purification, algae removal Ozone Machine: Rated Power: 6W Ozone Amount: 120MG Air Pump: Rated Power: 8W Maximum Air Volume: 4 x 3L/Min. Package List: 1 x Ozone Machine1 x Air Pump2 x Hose (Transparent and White Random)1 x Check Valve4 x Bubble Stone1 x Air Pump Manual