The key to fish farming in spring and summer
In the spring and summer handover period, it is the best season for fish reproduction. However, as the temperature continues to rise, various viruses and bacteria will continue to multiply. This can easily lead to the invasion of fish by pathogens and thus affect economic efficiency. In order to reduce the occurrence of fish diseases, there are three key points for fish farming in the spring and summer handover.
Spring and summer fish anti-pan pan
Between spring and summer, the temperature of pond water is low, coupled with hot and humid weather, rainy weather, and insufficient sunshine, which can easily lead to deterioration of water quality. At this time, the dissolved oxygen in the pond is extremely low, often below 1.5 milligrams per liter. Only when the amount of oxygen is more than 2-2.5 mg per liter does the pan pool occur. On the other hand, as a result of feeding too much feed, some of the feed remains in the pond, and the residual bait decomposes in the pond and consumes a lot of oxygen, and releases some toxic gases such as hydrogen sulfide and ammonia nitrogen compounds, and deteriorates the water quality, causing flooding.
Early open science feeding
In general, when the water temperature is above 20°C, the fish begin to ingest food. At this time, it is necessary to scientifically feed and enhance the physique, such as appropriate feeding of concentrates, to increase protein nutrition. To strengthen the patrol pond, record changes in water quality and dissolved oxygen. According to the changes in water temperature, it should be gradual, with a small amount of more investment, and gradually increase the amount of feed as the water temperature rises. In the early stage of rising water temperature, do not rush to feed the bait, and avoid the fish in the bottom of the pond from freezing due to food intake. After the water temperature rises and stabilizes, change the water, dilute the poison, increase the amount of dissolved oxygen, and control the water quality.
Proper disinfection and improvement of water quality
When the water temperature rises, appropriate quicklime or bleach is used to adjust pH and improve water quality.
Aquatic sodium perborate powder is used as a veterinary drug for fish and can be used to increase dissolved oxygen in water and improve water quality. When used, mix according to the package description. Mix it evenly in a dry container before use. Sprinkle directly at the center of the floating head of the fish. Spill area is about 1/4 of the total water body area. When preventing fish floating heads, use 0.4 g for 1 cubic meter of water body, and use 0.75 g for 1 cubic meter of water when treating fish floating heads and pans. After use, the packaging bag should be destroyed; it should be stored in a dry and ventilated place when it is stored, and it must be stored in isolation from combustibles.
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