Feature: 1. IONIZATION TECHNOLOGY: Fish tank ozone machine uses ionization technology to produce ozone to cover the fish tank, decompose nitrite and restore clear water. 2. USE WITH AIR PUMP: Ozone machine can not be used in water, need to use with air pump, hose connection can be used to continuously maintain the water quality in the tank. 3. HIGH CONCENTRATION: Release high concentration of active oxygen every minute, active decomposition of harmful substances, from the source to quickly solve the pollutants. 4. CAN BE USED CONTINUOUSLY: Ozone machine can be used continuously, if the water is clear, you can turn it off, and then turn it on when the water quality deteriorates. 5. VENTILATION USE: It is recommended that the ozone machine ventilation use, ozone machine according to the water quality to adjust the use, decomposition reduction to oxygen. 6. NUMERICAL ADJUSTMENT: When the water quality is poor, adjust to the right side of the maximum value to run, the water quality in general, adjust to the middle value of 5. 7. PLACEMENT: In order to avoid the backflow of water from the fish tank, it is recommended to place the ozone machine above the level of the fish tank more than 20cm/7.9in. Specification: Item Type: Aquarium Ozone Generator Material: ABS, Stainless Steel Use: Water Purification, Algae Removal, Etc. Ozone Machine: Rated Power: 6W Ozone Amount: 120MG Air Pump: Rated Power: 3W Maximum Air Volume: 3L/Min Plug Type and Voltage: UK Plug 220V. Package List: 1 x Ozone Machine1 x Air Pump2 x Hose1 x Check Valve1 x Air Bubble Stone1 x Air Pump Manual Note: Clear and white hoses are shipped randomly