An aerator includes a water-repellent mechanism, a main communication tube, an array of nozzles, and two buoys. The water-repellent mechanism has a pump module and a turbine module, and is locked by a stand. The main connecting pipe is connected to the turbine module, and the nozzles are inserted into one of the inlet tubes and inserted into an inlet pipe at the other end, and the injection pipe is screwed at the other end. An inlet pipe is disposed above the drainage cylinder, and the inlet pipe is eccentrically disposed and connected to the main communication pipe, and the injection pipe can be screwed in or out to make the air intake The pipes are closely butted or create a gap. The two floats are provided with a fixed frame. The fixed frame passes through the stand, and the water-repellent mechanism is fixed between the two floats, and the main connecting pipe is disposed on the inner side of the two floats. Thereby, the injection pipe can be screwed outward, and the main communication pipe can be sent into the water inside the drainage pipe body, can be discharged into the injection pipe, and the air is mixed into the water from the intake pipe, and then Discharged into the culture pond, and a large number of tiny bubbles are generated in the culture pond to increase the oxygen content in the pond water, and can be effective The separation of impurities in the filtered water.
