Correct use of aerator
（1） To determine the loading load, the water depth, area and pool shape are generally considered to determine the type and load of the aerator. For example, the rectangular pool is of water truck type, and the square or circular pool is of impeller type; the power per kilowatt of impeller type aerator can basically meet the oxygen demand of 3.8 Mu surface adult fish pond, and the fish pond with more than 4.5 Mu should be equipped with more than two aerators.
（2） The installation position and the required aerator shall be installed in the center or windward position of the pond, more than 5 meters away from the pond bank, and fixed by inserting rod or anchor. When installing the impeller type aerator, ensure that the water flow generated by the aerator during operation will not stir up the sludge at the bottom of the pool. In addition, during the installation, it is required to strictly abide by the safe electricity use rules, take safety use protection measures, and regularly check and maintain.
（3） The aerator must be operated in a safe condition when the start-up time and operation time are well controlled, and the operation time and time are determined by combining the stocking density, water quality conditions, growth season, weather change, aerator load and other factors of the fish in the pond, so as to play a role without wasting. If it is started once at 2-3 p.m. on a sunny day, if the load of the 3-kW aerator is 3-5 mu of water surface, it only needs to be started for 0.5 hours, and when the load is 6.7-10 mu of water surface, it can be started for 1 hour, but it is generally not started in a sunny evening. In rainy days, it should be started in the early morning, and in continuous rainy days, it should be started in the middle of the night until sunrise, while in the daytime, it is generally not started. Fish floating head should be started as early as possible, and can be stopped only after floating head goes down. Wind is small, the weather is hot, the area is large, after fertilization, when the cultivation is dense, the start-up time is slightly longer, on the contrary, the start-up time is short.