environment for fish, the following water quality management guidelines need to be followed.

First of all, the selection and treatment of water sources are crucial. High-quality water sources are the foundation of good water quality. Try to choose clean, pollution-free natural water or treated tap water. If tap water is used, it must be dechlorinated. Leave the tap water to stand for 24 - 48 hours to allow the chlorine in it to naturally evaporate, or use a water dechlorination agent to ensure that the chlorine content in the water is lower than the level harmful to fish and avoid causing damage to fish gills and other organs.

Secondly, the filtration system is the core equipment for maintaining water quality. Round fish ponds should be equipped with efficient filtration systems, including physical filtration, biological filtration and chemical filtration. Physical filtration uses filter cotton, biochemical cotton and other materials to intercept solid impurities in the water, such as residual bait, feces and dust, to prevent them from decomposing in the water to produce harmful substances. Biological filtration relies on beneficial microorganisms such as nitrifying bacteria to convert toxic substances such as ammonia nitrogen in water into harmless nitrates to maintain the ecological balance of the water body. Chemical filtration can use activated carbon, water quality stabilizers, etc. to absorb odors, heavy metal ions and residual harmful substances in water to further purify water quality. Regular cleaning and replacement of filter materials to ensure the normal operation of the filter system is the key to maintaining stable water quality.

Moreover, regular water changes are an indispensable link. However, water changes should not be too frequent and in large quantities, so as not to cause violent fluctuations in water quality and cause stress reactions to fish. It is generally recommended to change water by 10% - 20% every week. When changing water, attention should be paid to the water temperature, pH and other parameters of the new water and the original pool water as close as possible to avoid adverse effects on fish due to excessive differences. At the same time, slowly inject new water to avoid impacting the sediments at the bottom of the fish pond and prevent water quality from deteriorating.

In addition, paying close attention to various parameters of fish pond water quality, such as pH value (pH value), ammonia nitrogen content, nitrite content and dissolved oxygen content, is an important daily task of water quality management. Professional water quality Detection Tools can be used for regular testing and the water quality can be adjusted in time based on the test results. For example, when the pH value is found to deviate from the appropriate range (the appropriate pH value for most freshwater fish is between 6.5 and 7.5), it can be adjusted by adding a pH adjuster; when the dissolved oxygen amount is insufficient, the oxygen content in the water can be increased through an oxygen pump to ensure that the fish have sufficient oxygen to breathe.

Finally, reasonable control of fish numbers and feeding amounts is also an important factor in maintaining water quality. Avoid over-feeding and prevent excessive residual bait from decomposing in water and producing excessive harmful substances. According to the type, size and growth stage of the fish, scientifically and reasonably feed appropriate amount of high-quality feed to maintain the ecological balance of the fish pond.

Through the implementation of the above water quality management guidelines, your round fish pond will have clear and stable water quality, providing a comfortable and healthy living space for fish, allowing you to enjoy the fun of fish farming and the tranquility and beauty brought by the fish pond.