First of all, we must ensure the purity of water quality, in other words, filtration, and minimize the physical and chemical indexes of other water bodies such as impurities, ammonia nitrogen, nitrite and hydrogen sulfide through physical measures;
Secondly, on the basis of filtering water quality, microecological agents are used to adjust water quality. On the one hand, microecological agents can ensure the stability of water quality and prolong the decline and replacement time of water quality; On the other hand, it can satisfy the feeding of fish, increase the ecological balance in the intestine of fish, and make fish look healthier and more beautiful; Thirdly, microecological agents can remove impurities, ammonia nitrogen, nitrite, hydrogen sulfide, human sewage, fish feces and other indicators remaining in the water after filtration, especially converting human sewage and fish feces into something that fish can eat, but not all; Fourthly, microecological agents are helpful to inhibit or control fish diseases caused by human bacteria entering the pond.
Finally, in order to ensure the natural circulation of water quality, it is suggested to install a set of tap water facilities for uninterrupted circulating filtration; There should be a certain height between the water inlet and the water surface, so that after the water is left behind, it can shake the water surface and form hydrate. The advantage of this method lies in the fluidity of water body, ensuring sufficient dissolved oxygen and filtering out the dirt after human body cleaning.