Put "test fish" test water. Ten to 20 tails of small, health-threatening carp were placed in front of the fish ponds and nets were used to hang them in the pond water. After one day of testing, the carp was normally active, demonstrating that the toxicity had disappeared; if the poison ponds had a long time (more than 10 days) ), you should put 4-5 inches of squid 30-50 tail, early in the morning to observe the activities of test fish, if the sunny day early in the morning does not float, or floating head to sink, to prove that the water quality is thinner, fertilizer should be added; If at 8-9 o'clock in the morning it is still floating, the cueing frightens the fish is still not sinking and proves that the water quality is too fat and new water should be added. Fish fry 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, and squid and carp seedlings may be more appropriate, and grass carp may be less appropriate. It is best to separate the lower pond. When down 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 pond water temperature is consistent when the next pond, so as not to cause too much difference in water temperature and cause fry death. Underwater 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. Recessed Louver Fitting With LED Tube Half-mirror louver fitting for led t8 tube,Led Lighting Fixture Louver Fitting Recessed,Recessed Modular 9w LED Tube Fitting,led louver fittings For Efficient Lighting Ningbo Wellway Optoelectronic Technology Co.,Ltd , https://www.wellwayopto.com