. Koi prefer to live in water with low hardness and slight alkalinity. Before winter, breeders need to change the water in advance and keep the water clean. In addition, raising koi outdoors should ensure that the water depth in the fish pond is more than two meters, so that there is no need to worry about the water being frozen in winter.
, the temperature is relatively low in winter, and the pond water is easy to freeze, so we should try our best to ensure that the water surface of the fish pond will not be completely frozen, otherwise the situation of hypoxia will easily occur. If the sudden drop in temperature is severe and the surface of the fish pond has been completely frozen, the breeder can punch holes in the ice to leave a place for ventilation. If the ice is not too thick, part of the ice can be smashed off.
. Koi fish do not require high water temperature. They can accept water temperature between 2-30 degrees, but the most comfortable water temperature for them is between 20-25 degrees. They can't adapt to the sudden change of water temperature. If the water temperature fluctuates sharply, they will feel uncomfortable. In the winter, the breeder keeps them warm. You can add a warm shed outside the fish pond, cover it with straw, and finally add a layer of plastic film, so that the winter is basically no problem.
