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Mysteries of dissolved oxygen in aquaculture
During the culture of Penaeus vannamei, the chemical indexes and physical properties of water quality usually use dissolved oxygen, pH value, ammonia nitrogen, hydrogen sulfide, nitrite, salinity and water.
2019-02-26 -
Aquaculture environment-hardness and dissolved oxygen
Aquaculture environment-hardness and dissolved oxygen
2018-07-09 -
Oxygen pumps are not the only major sources of oxygen supply in fish tanks.
Oxygen is the basis for the survival of fish and aquatic organisms. Tropical fish absorb oxygen from the water through their gills and the gas is exchanged for carbon dioxide. The oxygen content on the surface of natural water is higher than that under water, which can be used for fish and other aquatic organisms to survive. So,...
2018-07-02 -
Control of Root Rot of Flowers in Family hydroponic Culture
Hydroponic flowers are popular in recent years, according to the way of oxygen supply, hydroponic flowers can be divided into two kinds, one is to use dissolved oxygen in nutrient solution, the other is to absorb oxygen directly from the air. For hydroponic flowers, the occurrence of root rot is mainly due to the lack of dissolved oxygen in nutrient solution.
2018-12-23 -
How do shrimp farmers get out of the misunderstanding of dissolved oxygen management in shrimp ponds?
How do shrimp farmers get out of the misunderstanding of dissolved oxygen management in shrimp ponds?
2018-11-02 -
Practical Water quality Control Technology in Aquaculture
Practical Water quality Control Technology in Aquaculture
2018-07-09 -
Quick dissolving and dispersing of fertilizer and slow dissolving and dispersing
At present, there are many varieties of slow and controlled release fertilizers in our country, and the products of a variety of materials and release mechanisms can be said to blossom, but due to the low level of knowledge of farmers, there is a serious lack of understanding of such updated products, especially some illegal manufacturers hype the concept, opportunistic, hurt the feelings of consumers, make it produce.
2018-07-17 -
A brief discussion on the skills of hydroponic Flowers to increase the content of dissolved oxygen in nutrient solution
We all know that flower planting, if you want to be good, then you need to increase the flower nutrient solution, so do you know how to improve the dissolved oxygen content of the nutrient solution? If you don't know, learn from the editor. Here are the techniques for hydroponic flowers to improve the content of dissolved oxygen in nutrient solution.
2018-10-13 -
The current situation of Taiwan's blue land is fully recorded! The Kuroshio sailed around the island to measure plastic particles, underwater sound and dissolved oxygen in water.
The current situation of Taiwan's blue land is fully recorded! The Kuroshio sailed around the island to measure plastic particles, underwater sound and dissolved oxygen in water.
2018-05-29 -
Aspirin ink orchid how to raise, soak dissolved spray plants
Aspirin ink orchid how to raise, soak dissolved spray plants
2020-05-16 -
How to raise Aquatic Tiger skin Orchid
Tiger tail orchid, native to tropical Africa, is a desert plant that can tolerate harsh environments and surprising drought conditions. It likes warm temperatures, needs plenty of sunshine, and is moderately shady. The suitable temperature is 18 degrees Celsius to 27 degrees Celsius, below 13 degrees Celsius, stop growing. Winter is a dormant period.
2018-12-21 -
Preparation of nutrient solution for hydroponic Flower
Preparation of nutrient solution for hydroponic Flower
2020-05-25 -
Methods of preventing fish from anoxia in winter
In winter, although the intake of fish in the pond decreases, they still need a certain amount of dissolved oxygen to maintain slow breathing. The dissolved oxygen in the pond mainly comes from the photosynthesis of phytoplankton and the oxygen in the air dissolves directly into the water. However, in the cold winter, once the surface of the pond freezes, the oxygen in the air cannot dissolve in the fish pond. When heavy snow covers the ice, the sun cannot shine directly into the pond water, and the green plants in the water cannot carry out photosynthesis to produce oxygen. And most of the fish gather at the bottom in winter, if the water quality is poor,
2019-01-16 -
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 -
Prevention of fish hypoxia in winter
In winter, fish in ponds need dissolved oxygen to maintain slow respiration although their feeding activity decreases. Dissolved oxygen in ponds comes mainly from phytoplankton photosynthesis and direct dissolution of oxygen in the air into water. However, in the cold winter, once the water surface of the pond freezes, the oxygen in the air cannot be dissolved in the fish pond. When snow covers the ice surface, sunlight cannot directly shine into the pond water, and green plants in the water cannot carry out photosynthesis and produce oxygen. And most fish gather at the bottom of the water in winter,
2019-01-16 -
Why does the bronze green unicorn dissolve the water?
Why does the bronze green unicorn dissolve the water?
2020-07-27 -
Measures for regulating dissolved oxygen in fish ponds by fish culture
Regular injection of fresh water under the condition of high density culture, there are more residual bait and dirt in fish ponds, and anaerobic fermentation produces harmful substances such as ammonia nitrogen and hydrogen sulfide, which worsens the water body, especially in high temperature season, and the water quality deteriorates faster. Therefore, regular water injection is the most commonly used to regulate water quality.
2020-11-08 Fish culture regulation fish ponds dissolved oxygen measures regular filling new water -
Why do fish frequently get sick?
In aquaculture practice, there is often a phenomenon that varieties with strong disease resistance in the wild become susceptible to diseases because they live in the aquaculture environment for a long time. The disease resistance of fish is mainly determined by its genetic factors, but in the end, the disease is determined by the environment. All kinds of stimuli of environment to fish are environmental stress factors. In aquaculture ecosystems, stresses on fish are often caused by environmental factors such as Nonionic ammonia, dissolved oxygen, pH and water temperature. Generally speaking, aquatic products
2019-01-16 -
Experience in water quality control of farmed rainbow trout
Water quality condition is an extremely important content, which is directly related to the success and failure of rainbow trout culture and production. Rainbow trout is a fish that likes countercurrent and oxygen. The stimulation of water flow can not only accelerate the metabolism of substances in the body, but also take away excreta. Rainbow
2020-11-08 Culture rainbow trout water quality control experience conditions is -
Study on hydroponic culture technology of cycad bonsai
Cycad has high ornamental value and economic value, and is deeply loved by people in China and the world. It is widely cultivated in China and the world, and can be used to decorate gardens, conference venues, hotels, homes and so on. In recent years, with the expansion of the demand for environment-friendly indoor greening and decorative plants
2018-08-27