Water quality assessment involves several parameters, including water temperature, dissolved oxygen (DO), salinity, alkalinity, pH, turbidity, total nitrogen content (including ammonia, ammoniacal nitrogen, nitrite and nitrate), phytoplankton abundance and water hardness. By monitoring these key water parameters, farmers can identify potential problems in their ponds, take preventive measures and quickly find appropriate solutions to ensure a stable aquaculture environment and healthy organisms.
In shrimp and other aquaculture, to ensure excellent water quality is the core of the realization of aquaculture success. As the saying goes, "good water is a prerequisite for good aquaculture", which illustrates the importance of water quality.
The health and growth of aquatic organisms are closely related to water quality, and poor water quality may trigger the stress response of organisms, weaken their immunity, increase the risk of disease infection, and may even lead to a large number of deaths. Therefore, through effective water quality management, not only can we improve aquaculture efficiency and product quality, but it is also an important measure to realize environmental protection and promote the sustainable development of fisheries.
Instruments for measuring water quality parameters mainly include reagents and water quality testers. Today, we focus on the online water quality tester.
Online water quality tester can monitor and analyze water quality in real time, such as pH, turbidity and dissolved oxygen, to help prevent the risks associated with water quality problems. This device is particularly suitable for aquaculture and can also be customized to monitor other parameters as needed.
1. pH
The pH value is critical to the biochemical processes in the water body and it affects the growth of fish and shrimp. Standards specify that the pH of aquaculture water should be between 6.5 and 8.5, with freshwater fish adapting to pH 6.5 to 8.5 and shrimp preferring a slightly alkaline environment of pH 7.8 to 8.6. Fish at different stages of culture also have their optimal pH ranges, with pH 7.5 to 8 at the fry stage and pH 7 to 8.5 at the adult stage.
2. Dissolved Oxygen
Dissolved oxygen is critical to aquaculture because aquatic organisms need oxygen to survive. The amount of dissolved oxygen in freshwater is low and easily insufficient, so it is critical to monitor dissolved oxygen levels. Dissolved oxygen comes mainly from air and photosynthesis by aquatic plants, but air dissolves much less oxygen than plants produce.
3. Ammonia Nitrogen
Ammonia nitrogen is a substance produced in the water column when organic matter decomposes or oxygenated compounds are reduced. Aquatic animals excrete it through metabolic processes, eventually in the form of ammonia. Despite its low concentration, ammonia nitrogen is toxic to fish and other aquatic organisms and can inhibit their growth. Therefore, monitoring and controlling ammonia nitrogen levels is critical to maintaining the health of aquatic ecosystems.
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