In rural areas, there are basically several fish ponds in every village. In recent years, many people have returned to their hometowns to start aquaculture, so these fish ponds are used. In fish ponds where fish are raised, one often sees a machine installed in the pond. This machine is an aerator. What is the use of installing an aerator in the fish pond? Why sometimes the aerator is turned on, and sometimes the aerator does not turn on for a long time? When is the better effect of the aerator? Today we will talk about this topic.