Water Quality Analysis in Aquaculture: Dissolved Oxygen Meter

Publish Time: 04/14 2023 Author: Site Editor Visit: 305

In the process of aquaculture, not only the nutrition of the feed must be ensured, but the water quality is also essential. Dissolved oxygen is the lifeline for the survival of fish in the water: if the dissolved oxygen in the water is high, the water quality will have the characteristics of fat, liveliness, and refreshment. Fish have a strong appetite and high feed utilization; on the contrary, when the dissolved oxygen in the water is low, their feeding rate and feed utilization will be inhibited to varying degrees. At present, pond culture relies on manual control of aeration machines, which effectively solves the problem of aeration in fish ponds.

However, due to the inability to accurately judge the dissolved oxygen content, there is still a certain blindness in manual control of the aerator, and it is difficult to achieve the goal of making the dissolved oxygen moderate and saving electricity. The phenomenon of hypoxia occurs from time to time, and the cruel lesson is shocking! The loss caused by poor breeding accounts for 10% of the total value! Therefore, the monitoring of dissolved oxygen in fish ponds is essential.

A dissolved oxygen meter measures the oxygen content in an aqueous solution. Oxygen in water changes with temperature, air pressure, and salinity. The higher the temperature, the higher the salinity, the lower the dissolved oxygen, and the higher the air pressure, the higher the dissolved oxygen. Oxygen in water can usually come from the oxygen in the air, and it can also be produced through the photosynthesis of plants in the water. At the same time, there are many factors in the water that consume oxygen, so the oxygen content in the water is unstable, and it needs to be dissolved by a professional solution. The dissolved oxygen meter is used to measure the dissolved oxygen content in water.

In aquaculture, water has many factors that affect water quality, such as pH, ammonia nitrogen, nitrite, etc. If dissolved oxygen can be kept at a stable level, other harmful substances will be reduced. It can be said to control aerobics It can control the rise of other harmful substances. Oxygen is also the easiest to control all parameters in water, and the cost is the lowest. However, it is difficult to grasp whether the water is hypoxic. Once hypoxia, it will affect the growth of fish. When the oxygen is maintained at a certain level, the bait coefficient can be reduced, the quality and quantity of the product can be improved, and the minimum investment can be exchanged for the maximum harvest. Therefore, the dissolved oxygen meter plays a very important role in aquaculture.

The intelligent dissolved oxygen meter can also intelligently control the aerator. When the oxygen content required by aquaculture is lower than that required by aquaculture, it will automatically control the aerator to increase oxygen. When the required oxygen content is reached, it will automatically disconnect. With the rapid development of today's aquaculture industry, Intelligent farming gradually replaces traditional farming, reducing unnecessary labor.

dissolved oxygen meters can measure oxygen concentrations in both fresh and saltwater

At present, the main reason why the dissolved oxygen meter cannot approach ordinary farmers is that the mainstream electrochemical dissolved oxygen measuring instrument is cumbersome to operate and has poor accuracy. The price of products imported with more advanced technology is generally higher, which is difficult for ordinary farmers to accept. Sincerely recommend to users is the instrument of the United States - the nation, with the same quality as foreign countries, and the real price for our common people.

Determination of dissolved oxygen is also required in aquaculture. In 24 consecutive hours, the dissolved oxygen content must be greater than 5mg/L for more than 16 hours, and must not be lower than 3ml/L at any other time. For frogfish habitats, the dissolved oxygen content must not be lower than 4mg/L at any other time during the ice-covered period. High dissolved oxygen If it is less than 12mg/L, it shows that the oxygen in the water is excessive, and fish and shrimp are prone to air bubble disease at this time.