Yes, urinary incontinence in fish ponds can enrich water and make fish fatter. When urea is put into fish ponds, fish will not eat urea, but the addition of urea will lead to eutrophication of fish pond water, and plankton and microorganisms in the water will multiply in large numbers, and fish will become fat when they are full.

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Pond condition

The area of high-yield pond is generally about 10 mu, and the water depth is about 2.5 meters. Due to the abundance of plankton and suspended organic matter in high-yield ponds, photosynthetic effective radiation can rarely be transmitted to the water layer below 0.5 meters. Therefore, mechanical oxygenation or fresh water with more dissolved oxygen should be carried out to improve the dissolved oxygen status of near-bottom water and increase stocking quantity and output.

Generally speaking, the soil in the pond is sandy loam. The water quality requires slight alkalinity (pH 7 ~ 8.5), hardness 5 ~ 8, transparency about 30 cm, and dissolved oxygen 3 ~ 6 mg/L. Before stocking, excessive silt in the pond should be removed, the bank should be trimmed, and drugs such as quicklime should be used to kill pests and diseases.

The pond is the main part of the farm. According to different culture functions, it can be divided into parent fish pond, fry pond, fish pond and adult fish pond. The pond area generally accounts for 65% ~ 75% of the farm area. The proportion of all kinds of ponds is generally determined according to the cultivation methods, characteristics and varieties.

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