It is best to use quicklime as the pond cleaning medicine, and the use method and dosage are the same as those in the nursery pond. It is best to use tea seed cake mixed with quicklime. Water depth 1 m, 30 kg of tea seed cake and 75-90 kg of quicklime are used per115 hectare. When cleaning the pond, first mash the tea seed cake, soak it in water (if you are in a hurry to put the seeds, soak it in warm water for 24 hours), then mix it with quicklime and sprinkle it. You can also use disinfectants such as sodium isocyanurate containing dichloro or trichloro to clean the pond, but the fertilizer effect after cleaning the pond is not as good as that of quicklime cleaning the pond.
Fish farming is generally polyculture, and the fish in the upper and lower water layers are raised to make full use of space.
You can raise one or two kinds of fish, or you can raise some filter-feeding fish, such as silver carp and bighead carp, together to maintain water quality.