How to adjust the water quality of fish farming?

Water quality regulation is an important aspect of water management, which can be summarized as: (1), timely replenish fresh water. Generally, fresh water is injected once every half month, and the water injection is about 30 cm each time. It is best to use running water to raise fish where conditions permit. (2), scientific use of oxygen-increasing machinery. Generally, every 2,000 square meters is equipped with a 3 kW aerator to start aeration at the right time. (3) Using quicklime to improve water quality. Use 25 kilograms of quicklime per mu and sprinkle the whole pool once a month. (4), timely fertilization. In the process of culture, due to factors such as fish defecation, bait, residue, etc., the content of ammonia nitrogen in the pond is easy to be high, and the amount of fertilization is generally about 7 kg of calcium dihydrogen phosphate per mu to reduce the concentration of ammonia nitrogen in the water body and achieve the dual effects of fertilization and water quality regulation.