The water treatment of fish ponds is very simple, and there is no need to completely change the bottom. Using quicklime will make the water eutrophic. It is best to use microbial agents to adjust the water quality balance, such as special strains for golden aquatic products, which can make the water quality fat, lively, tender and refreshing. For example, golden fungus is diluted with water in a certain proportion and then sprinkled on the water. That's enough. It's simple.