Feature: 1. PURIFICATION OF WATER QUALITY: Aquarium ozone machine using ionization technology to produce ozone to cover the fish tank cleaning, decomposition of nitrite, restore clean water quality. 2. CAN BE USED CONTINUOUSLY: The fish tank ozone machine can be used continuously and can be turned off if the water is clear. Turn it on again when the water quality deteriorates. 3. USE WITH AIR PUMP: It can not be used in water, it needs to be used with air pump and connected to hose. In order to avoid the backflow of water from the fish tank, it is recommended to put it above 20cm/7.9in above the level of the fish tank. 4. SOURCE PURIFICATION: Release high concentration of active oxygen every minute, actively decompose odor, nitrite, etc, quickly solve the pollutants from the source, decompose and reduce to oxygen, continuously maintain the water quality in the tank. 5. NUMERICAL ADJUSTMENT: It is recommended that the ozone generator is ventilated used, adjusted according to the water quality, the water difference is adjusted to the maximum value on the right, and the water quality is generally adjusted to the middle value 5. Specification: Item Type: Aquarium Ozone Machine Material: ABS, Stainless Steel Use: Water Purification, Algae Removal, Etc. Ozone Machine: Rated Power: 6W Ozone Amount: 120MG Air Pump: Rated Power: 12W Maximum Air Volume: 4x4L/Min Plug Type and Voltage: UK Plug 220V. Package List: 1 x Ozone Machine1 x Air Pump2 x Hose1 x Check Valve4 x Air Plate1 x Air Pump Manual