lack of oxygen Learn more about lack of oxygen
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Why do fish ponds lack oxygen?
Why do fish ponds lack oxygen?
2019-09-17 -
As soon as the Spring Festival begins to raise chicks, early spring chicks should beware of lack of oxygen.
As soon as the Spring Festival begins to raise chicks, early spring chicks should beware of lack of oxygen.
2018-07-11 -
Methods of increasing oxygen in fish ponds
When raising fish in a pond, if there is a lack of oxygen in the water, it will lead to floating heads of fish and shrimp, which may seriously cause asphyxiation. The following editor will share with you the methods of increasing oxygen in fish ponds. Methods of increasing oxygen in fish ponds there are four common methods of increasing oxygen in fish ponds.
2020-11-11 Fish ponds aeration methods in ponds medium fish culture if water bodies -
Why pond fish lack oxygen in winter
This is because when the temperature drops, the surface water temperature of deep-water ponds, fertile water ponds and cage high-density aquaculture waters is lower than that of the lower layer, and the specific gravity of water is higher than that of the lower layer. As a result, the surface cold water sinks and the lower warm water floats, forming vertical convection of the water body. On the other hand, the water body of the deep water layer is anoxic or even anaerobic, and the anoxic and anoxic water body floats up, resulting in serious hypoxia in the upper water body. On the other hand, the vertical movement of the water body accelerates the oxidation and decomposition of residual bait and feces deposited at the bottom of the pond, and increases the oxygen consumption in the water body. On the other hand, winter is too much
2019-01-15 -
How to increase oxygen in fish ponds in winter
How to increase oxygen in fish ponds in winter
2019-12-16 -
What about the lack of oxygen in fish ponds when the temperature is too high or too low?
Fish farming is also a matter of knowledge, the survival of fish can not be separated from oxygen. Generally speaking, the dissolved oxygen in aquaculture water should be kept at 5-8 mg / L and at least 3 mg / L. In summer, the temperature is too high, or in winter and spring, the temperature is too low.
2020-11-11 Temperature too high or too low in case fish ponds lack of oxygen -
How to prevent frost in temporary culture of river crabs in winter
1. The temporary culture density of ice-breaking commercial crabs is high, and the temperature is low after snow, so it is difficult to culture and manage. By hitting the ice hole or breaking the ice, on the one hand, we can observe whether the overwintering pond is short of water and lack of oxygen, on the other hand, it can make some harmful gases escape from the water body. Lack of water
2020-11-08 Winter river crab temporary breeding how anti-freezing ice-breaking commodity crab temporary breeding -
Practical Water quality Control Technology in Aquaculture
Practical Water quality Control Technology in Aquaculture
2018-07-09 -
Analysis and Countermeasures of hypoxia in cultured Fish
Hypoxia refers to the state in which the internal tissues and cells of fish do not get enough oxygen to maintain their normal function. In order to distinguish from hypoxia in water, it can be called "biological hypoxia" or "tissue hypoxia". Asphyxia (dyspnea) is a phenomenon that occurs during biological hypoxia, and floating head is a common manifestation of dyspnea or asphyxia in aquaculture production. There are two cases of anoxic asphyxia in fish: one is that when the dissolved oxygen in the water is insufficient and the air pressure is too low, even if the respiratory function of the fish is normal, the tissues and cells in the body can not get enough oxygen, resulting in "anaerobic hypoxia";
2019-01-16 -
The growth and function of Rice Root
After accelerating germination, the seeds sprout and take root. At first, only one root, called seed root (main root), grew from the radicle of the seed. The fibrous root that grows from the root point of the stem node is called adventitious root. There are about 5 hairy roots in coleoptile nodes and incomplete leaf nodes, 10 hairy roots in the first, second and third leaves, and about 10-20 hairy roots in the nodes above the fourth leaf. This is because the leaves increase sequentially from the bottom up, the supply of nutrients to the hairy roots increases sequentially, and the hairy roots also increase. Aboveground nodes, generally not rooting. The nutrients produced by leaves are
2019-01-16 -
Causes and Control of hypoxia in Rice Roots
Rice is a kind of crop, most of which are self-sufficient in family cultivation, but some are planted on a large scale and listed for sale after harvest. However, growing rice requires us to prevent a lot of problems, among which the lack of oxygen in rice roots is
2020-11-10 The latest rice root hypoxia cause and control -
Effect of moisture content in cultivation medium
Effect of moisture content in cultivation medium
2018-05-05 -
Causes and Control of hypoxia in Rice Roots
Causes and Control of hypoxia in Rice Roots
2018-09-20 -
Reference factors of nutritional nursing of chronic obstructive pulmonary disease
Chronic obstructive pulmonary disease (COPD) is chronic obstructive pneumonia. because the illness affects the mood, or because of the development of the disease itself, the spleen and stomach function of "mother's disease and son" decreases, resulting in indigestion, loss of appetite and lack of food and nutrition.
2018-05-05 -
Teach you how to feed goldfish by hand
Today, what I want to tell you is our cutest little goldfish. I believe that the little goldfish swimming in the small round fiberglass is the childhood memory of many people. Although it has grown up now, the small fiberglass has been replaced by a big fish tank. But the little goldfish is still
2020-11-11 Hand in hand teach you how to feed goldfish today uh I want to give -
How to prevent and cure the "water poisoning" of fish
The water body is the air for fish to live. In recent years, due to water pollution (such as dissolved oxygen exceeding the standard. The metal exceeds the standard. The water body is lack of oxygen, etc.), which makes the fish suffer from water poisoning, resulting in a large number of deaths. The following methods can be used for the prevention and treatment of water poisoning in fish bodies. Excessive dissolved oxygen in water will cause eutrophication of water body and cause many diseases such as bubble disease in fish. 1. Due to the application of too much unfermented fertilizer in the harmful and symptomatic water body, fine methane and sulfidation are decomposed at the bottom of the pond.
2019-01-16 -
How long is the best time to increase oxygen in fish ponds? How much is a fish pond aerator?
The better aeration time is from 12:30 to 13:30 in sunny days, from 01:00 to 03:00 or from 03:00 to 06:00 in cloudy days, and from 23:00 to 06 in the morning before floating head or in continuous rainy days.
2020-11-08 Fish pond aeration the best time yes for a long time aerator more -
Treatment of muddy water in Loach pond in rainy season
Treatment of muddy water in Loach pond in rainy season
2018-07-09 -
The consequence of poor gas exchange rate in the medium of orchid basin
The consequence of poor gas exchange rate in the medium of orchid basin
2018-05-05 -
How to do fish pond hypoxia in winter? How to cure?
In winter, the activity of fish is reduced. Although the oxygen demand is not high, the water surface cannot directly dissolve oxygen in the air due to ice formation in the fish pond. In addition, the oxygen production of plants such as aquatic plants in the water body decreases due to temperature decrease and photosynthesis weakening. It is easy to cause water pollution.
2020-11-11 winter fish pond hypoxia what to do how to cure fish