1. Change the water injection during the day to fill the water at night In the normal weather conditions, watering the fish ponds at night, especially at 3-4 am or 1-2 o'clock, can increase the amount of dissolved oxygen in the pool water, improve water quality, and prevent fish from hypoxia. Floating heads have a significant effect on preventing pans and diseases.
Second, change the absorption of deep water to absorb shallow water When the pump is used to add new water to the fish pond, it is usually inserted into the water 1 meter or deeper. The deep water is used for ingestion. This kind of water has high organic matter content, low dissolved oxygen content and low water temperature. After injecting into the fishing pond, it is unfavorable for fish growth and development. Therefore, it is necessary to change the absorption of oxygen-rich shallow water, that is, to insert the suction pipe into water 30 cm.
Third, change the water flow straight into the slant for many fish farmers to add new water to the fishing pond. Put the water pipe of the water pump in the middle of the pool and flush it directly into the pool to make the newly injected water and the original fish pond. The old water is hard to mix evenly, and oxygenation and water quality adjustment are not rapid. After slanting, the freshly injected water flow is easy to change direction, speeding up the mixing with the old water in the fishing pond and improving the water injection effect.
4. If the flow of water falls directly from the height to the bottom of the rushing tank, the flow of water and water entering the pond will be directly dropped as the board falls to the fishing pond, and the feed residue and excretion deposited on the bottom of the tank will be discharged. Things and sludge will be washed up and they will even burst into a pool at the bottom of the pool, causing pool collapse. In order to prevent this from happening, a fixed wooden board can be placed under the water in the tribe to make the injected new water fall on the board and splashes of water to increase the amount of dissolved oxygen injected into the new water.
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