1, water temperature: fish, as a temperature-changing animal, has high requirements on temperature. Always keep a constant temperature, and the temperature difference between day and night is preferably below 2℃. If it is a tropical fish, there are certain requirements for low temperature. The lowest temperature should not be lower than 20℃, preferably around 22-24℃. If the water temperature in the fish shop is low and the water temperature at home is high, which is more than four or five degrees higher than that in the fish shop, it is still necessary to heat it up. After all, there are not many fish friends who raise cold-water fish with heating rods. If the temperature difference is too large, whether it is high or low, it must be overheating in different degrees.
2. Dissolution culture: Because fish need to breathe in water, the level of dissolved oxygen is particularly critical. Increasing dissolved oxygen is beneficial to breathing and promoting the establishment of digestive system. Usually, the oxygen pump should be used for oxygenation. If the fish tank is relatively small and the demand for oxygen by fish is low, oxygen can also be supplemented by changing water. Dissolved oxygen is one of the three elements of aquaculture, and it is a substance formed by many factors.
Matters needing attention in saving water
All kinds of tropical fish have different habitats and prefer different water quality. Generally speaking, all kinds of ornamental fish in South America like acidic water quality, tropical fish in Africa like alkaline water quality, and tropical fish in Southeast Asia are suitable for neutral water quality. Generally speaking, alkaline water fish and neutral water fish can survive and grow in weakly acidic water, while fish in acidic water can hardly survive in alkaline water. But this is not absolute.
Mainly for fish tanks that need to be replaced with new water. At present, people choose tap water or well water to replace new water. The chlorine dioxide content of this water is extremely high, which seriously stimulates the breathing of fish gills and affects the growth and health of fish. Therefore, before replacing the new water, it is necessary to expose the new water for several days to remove chlorine dioxide in the water, and then change the water.