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Look at my combination of boxing to knock down "sub-salt" and not rebound yet.
Release time:
2021-10-09
Look at my combination of boxing to knock down "sub-salt" and not rebound yet.
Causes of 1. formation
Nitrite is an intermediate product in the process of converting ammonia into nitrate. In the middle and late stages of aquaculture, a large number of baits will cause the accumulation of residual baits and excreta in the water body. In addition, the regular use of disinfectants will destroy the balance of bacteria in the water body, resulting in insufficient supply of oxygen, hindering the nitrification process of nitrogen accumulated in the water body, resulting in the increase of ammonia nitrogen and nitrite content in the aquaculture water body, the problem of nitrite is the most prominent.
2. causes harm
Nitrite can enter the blood by gill filaments, affecting the oxygen carrying capacity of blood, tissue hypoxia, at this time fish, shrimp food intake decreased, gill tissue lesions, breathing difficulties, restless. Serious, can make fish and shrimp poisoning, leading to fish and shrimp some metabolic organ dysfunction, physical decline, at this time the fish and shrimp are prone to disease and death.
3. Solution
1. At noon on sunny days, more aerators will be opened to break the water stratification, promote the photosynthesis of algae in the water, and make the pool water have sufficient dissolved oxygen to promote the conversion of nitrite to nitrate.
2. Use chemical bottom modificationBeautiful bottomChange the bottom, oxidize the black mud and feces at the bottom of the pool, and reduce the oxygen consumption at the bottom of the pool.
3. Use fertilizer bacteriaprobiotic bolusWith phosphate fertilizer (balanced water nitrogen and phosphorus ratio),Diatom WangWater transfer fertilizer water increases the oxygen production of pond algae.
Time: August 12, 2019
Venue: Xintan Salt Field, Yancheng, Jiangsu
Breed varieties: carp set of Penaeus vannamei
Farming area: 200 mu, water depth 1.6 meters
Water index: ammonia nitrogen 0, nitrite 0.7,pH8.1
Description of the situation: Affected by the typhoon, the rainy weather for several days made the pond water turbid and thin, the shrimp had floating head in the morning, and the carp feed was significantly reduced. After measuring the rise of nitrite to 0.6, the preliminary diagnosis was that the water body was lean after the rain and the hypoxic reaction of fish and shrimp caused by the rise of sub salt.
1. Use the first morningBishui Jiedu Ann(40 mu/bottle) detoxification andBeautiful bottom(40 mu/barrel) change the bottom and soak in the evening.probiotic bolusandDiatom WangSpare.
The next day, it was sprinkled and soaked first.probiotic bolusandDiatom WangFertilizer water, then use phosphate fertilizer to maintain the balance of nitrogen and phosphorus ratio in water, and promote fertilizer water.
After two days of fertilizer and water, the color of the pond water changed from turbid to tender green. In the morning, the floating head of fish and shrimp disappeared, and the food intake of carp improved significantly. The sub-salt was measured to decrease from 0.6 to 0.2 and the pH rose to 8.5. After four days the sub-salt was reduced to 0.1.
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