First, pay attention to the density of seedlings per square meter put about 1000, after 7 to 15 days, the seedlings gradually increase, the density can be reduced. 7 to 9 cm juveniles have 200 to 300 fish per cubic metre, 10 to 13 centimeters juveniles have 100 fish per cubic metre, and 13 to 30 centimeters of adult fishes have 30 to 50 fish. During the high temperature season, appropriate sparse and ground water should be changed, and the low temperature season can be properly bred. When condition permits, try to spar some of them, so that the hippocampus can grow well, reduce disease, and grow rapidly.
Second, pay attention to change the water within 3 to 5 days after hatching, you can use the siphon method in the original pool to drain 1/2 to 2/3 of the old water, and the pool bottom dirt suction, and then add fresh seawater. As the hippocampus grows, the method of changing the water is usually used, and the temperature difference does not exceed 2°C. The operation should be light and fast. Change the water once in 1 to 2 days in summer, and change the water in 4 to 6 days in winter. In the event of rain, the pool water is too light, or there is loss of appetite, floating head, vocalization, acute panic, chaos, Shen Chen underwater or lesions, it is necessary to change the water in time, change the pool to rescue or shade treatment.
Third, pay attention to light and water temperature, strong light, planktonic algal bloom, is not conducive to the growth of the hippocampus, and the water temperature is too high, easy to cause disease. Shade during summer and autumn to avoid sun exposure. In winter and spring, the sunlight is weak and the water temperature is low.
Second, pay attention to change the water within 3 to 5 days after hatching, you can use the siphon method in the original pool to drain 1/2 to 2/3 of the old water, and the pool bottom dirt suction, and then add fresh seawater. As the hippocampus grows, the method of changing the water is usually used, and the temperature difference does not exceed 2°C. The operation should be light and fast. Change the water once in 1 to 2 days in summer, and change the water in 4 to 6 days in winter. In the event of rain, the pool water is too light, or there is loss of appetite, floating head, vocalization, acute panic, chaos, Shen Chen underwater or lesions, it is necessary to change the water in time, change the pool to rescue or shade treatment.
Third, pay attention to light and water temperature, strong light, planktonic algal bloom, is not conducive to the growth of the hippocampus, and the water temperature is too high, easy to cause disease. Shade during summer and autumn to avoid sun exposure. In winter and spring, the sunlight is weak and the water temperature is low.
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