After the new fish pond is built, it is also necessary to clear the pond, although there is no silt at the bottom of the pond, it is inevitable that there will be some bacteria. If there is no clear pond, harmful bacteria in the water may invade the fry, resulting in a large number of deaths. Usually, after building a fish pond, it needs to be exposed to the sun for a period of time, which can eliminate a large number of bacteria. Then put a little water into the fish pond and sprinkle bleaching powder or quicklime on the whole pond, both of which are sharp tools for sterilization and disinfection.
Poor water quality does not necessarily mean that the water is turbid. As the saying goes, if the water is too clear, there will be no fish. Too clear water will not raise live fish. Usually, after releasing water, it is necessary to fertilize it properly, which can not become feed for fish fry, but can promote the proliferation of plankton, so that fish can eat something. Of course, we should also pay attention to the detection of water temperature, hardness and so on, to see if the water is suitable for the growth and survival of fish.
In addition to the problem of fish ponds and water, the quality of fry is not good, and a large number of fish will die. This is mainly due to their weak constitution, unable to adapt to the pond environment, resulting in stress response, and then death. Generally to clear the source of fry, it is best to buy a little less to test its quality, if good, then large-scale purchase and put in, if a small batch can not survive, consider changing other sources.
