Prevent hypoxia. In the continuous rainy season, a small portion of raw water should be withdrawn daily or every other day, followed by the addition of equal amounts of fresh water. Once it is found that the water is extremely turbid or the dissolved oxygen is extremely low, the water should be changed in time. In addition, the stocking density should not be too large.
Prevent heat stroke. In the midsummer afternoon, the water temperature is usually up to 38 °C ~ 40 °C. Goldfish often suffer from sudden heat stroke due to high temperature and strong light, and it is difficult to treat. Therefore, shade should be shaded before 10 o'clock in the middle of the summer to prevent the pool from rising too quickly due to the sun exposure. For those with mild heat stroke, change the water temperature or change the water level in time.
Prevent anorexia. When the goldfish meets the sultry weather, it will lose its appetite. At this time, it is better to use live water to feed the goldfish, and it is better to feed less and less, and eat it in 10 minutes to 20 minutes.
Prevent disease. In the summer management, we must strengthen the observation of fish and water color. If the goldfish is found to be "top food", it indicates indigestion. The next day should stop eating or reduce the amount of feeding. For juvenile fish, careful observation of the body surface, the presence of white spot disease, or the presence of a layer of white feathers are all precursors to disease. Goldfish have been found to have abnormal performance, can be spilled in the fish pond 1% saline or 0.2% red mercury solution, reducing the amount of feeding, after 2 to 3 times of repeated prevention, can ensure the health of young fish.
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