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Fry successfully under Tanggu
1, put "test fish" test water. Ten to 20 tails of small, healthy and disease-free squid should be placed in front of the fish flower pond and hanged in the pond water with a net. After one day of testing, the carp is normally active, demonstrating that the toxicity has disappeared; if the poison pond has a long time (more than 10 days), should be put 4-5 inch squid 30-50 tail, purpose: First, eat some large maggot plankton in the water; second is to test whether the water quality of the fat is appropriate. Observe the activities of the test fish in the early morning. If the sunny days do not float, or if the floating head sinks, it proves that the water quality is thinner, fertilizer should be added; if it is still floating at 8 or 9 o'clock in the morning, the applause threatens the fish still Without sinking to prove that the water quality is too fat, new water should be added. 2, fry under the pond. The day before Xia Tang had to use the net to catch all the “test fishâ€. The number of stocking fryers is generally around 100,000 per acre. The carp seedlings may be more appropriate and the grass carp seedlings may be less appropriate. It is best to separate the lower pond. Under the pond, we must pay attention to the temperature difference between the water temperature, the temperature of the oxygen bag should be adjusted to the same pond water temperature to the next pond, so as not to cause the fish fry death due to a large difference in water temperature. 3. Shallow water seedlings gradually deepened. When the fish fry under the pond, the water depth is generally about 2.5 feet, so it is beneficial to increase the water temperature in sunny days and promote the reproduction of plankton in fish ponds. With the growth of fry, pond water should also be gradually deepened, generally add water every other week, each time adding 3-5 inches of water. In case of excessive water quality, the weather is hot and the fish fry heads. Immediately add water to save.