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 quality. 2. [Not Waterproof Use] Aquarium ozone machine cannot be used in water, it needs to be used with an air pump (included), just connect the hose (included). For air pump clean, water purification, algae removal. 3. [Continuous Use] Ozone generator is continuous use, if the water is clear, it can be turned off or on again when the water quality deteriorates. Continue to maintain the water quality in the tank. 4. [Restore Oxygen] Releases highly active oxygen every minute, actively decomposes harmful substances such as odor formaldehyde nitrite, quickly resolves pollutants from source, and decomposes into oxygen. 5. [Note] Ventilation use is recommended, water difference is adjusted to the maximum value on the right, and the water difference is adjusted to the middle value 5. To avoid the backflow of the fish tank, it is recommended to place the ozone machine above the fish tank level 7.9in. Specification: Item Type: Aquarium 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: 12W Maximum Air Volume: 4 x 4L/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