? The most difficult thing to keep fish in a big tank in the yard for winter is to control the temperature, because when the temperature drops, the fish's appetite will be lost, which will affect its survival. Half of the fish tank can be buried in the soil and covered with clothes, but the edges should not be completely blocked to ensure the circulation of gas. Some water should be added to the jar properly, less water is easy to freeze, and some salt can be sprinkled inside to prevent this from happening.
in winter 1. Reduce feeding: First of all, we should control feeding when raising fish in winter, because in the environment of low temperature, the appetite of fish will also decline. If we feed too much, the food that is not eaten will become residual bait, thus polluting the water quality. Of course, if the water temperature can be kept high, normal feeding is no problem.
2. Delayed water change: The deterioration rate of water quality is usually related to temperature. The deterioration rate is fast in summer and slow in winter, so the water quality can be better maintained without too frequent water change. If you have to change it every three or five days in summer, you can change it every one or two weeks in winter.
3. Pay attention to heat preservation: If you raise tropical fish, you must pay attention to heat preservation in winter. The water temperature should not be lower than 20 ℃, otherwise the fish will be frozen to death. Even for eurythermic fish, the low temperature should not be lower than 5 C, otherwise it will also affect their survival.
