1, reason: The water source that feeds koi most is tap water, tap water contains disinfectant, the content of chlorine is higher. Chlorine is extremely toxic to koi, and living in such water quality, koi will suddenly be poisoned to death.
2. Prevention method: After taking the tap water, expose it to the sun for three days, and then pour it into the fish tank after three days.
. 1. Reason: The water temperature fluctuates greatly. For example, when the water is changed, it is directly poured into the fish tank. There is no warming and heat preservation in seasonal alternation. When the temperature difference of the water exceeds 3 ℃, it is easy to be stimulated and die.
2. Prevention method: When changing the water, you can pour the hot water into the fish tank. Moreover, you can also use the heating rod in advance to raise the water temperature to the appropriate temperature of the koi. This will prevent the water temperature from fluctuating and stimulating the koi.
oxygen 1. Reason: The density of raising koi is too high at ordinary times, and the space of the fish tank is relatively small, so it is easy to lack oxygen at this time. Oxygen is an essential element for Koi to sustain life. When oxygen is insufficient, Koi will die of lack of oxygen.
2. Prevention method: Oxygen should be applied in time when oxygen is insufficient. We should also control the density of breeding, reduce the number of breeding tails appropriately, or replace larger fish tanks.
