Not long ago, a farmer in Yangyuan County dumped the leftovers of slaughtered pigs directly into his own fish pond. The next day, it was discovered that the dozens of grass carp fish floating on the surface of the water were initially thought to be fish diseases, but a closer look revealed that they were dumped into the pond to kill pigs.
As the saying goes: "Oil, hair slag, feces slag, used to feed the top fish." It is understood that it is unscientific for local farmers to dump the waste of slaughtered animals directly into ponds for feeding fish. Because the untreated waste contains grease, the formed oil floats on the water surface, blocking the oxygen in the water layer, and the debris sinks to the bottom and consumes a lot of oxygen. It also emits a lot of harmful gases and pollutes the water quality. Increased the possibility of flooding dead fish. If the fish is stained with oil, it will block breathing.
Rescue method: Quickly release the fish pond outlet, while discharging sewage, while adding new water; Use 500 grams of salt or 250 grams of bleaching powder per acre of fish ponds to spray the entire pool of 50 kg of water evenly; Use 250 detergent per acre of ponds. Grams of water 50 kilograms across the pool evenly, remove the oil.
In a hydroponic system, plants are placed in nutrient-enriched water. Mediums such as gravels, sand or vermiculite can also be used. Thus plants which are placed in the water absorb the nutrients very easly. When the nutrients from the water starts finishing , water is recycled or additional nutrients are added.
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