Aquaculture
In the 21st century, as people’s demand for aquatic products increases, in order to meet human demand for aquatic products, more advanced monitoring and feeding technologies are needed to create strictly controlled and sustainable growth conditions.
KACISE is a professional water quality sensor manufacturer. We can help you monitor and manage your aquaculture business and effectively reduce management costs. You can view the data collected by the sensor anytime and anywhere, and gradually move towards automated farming in the future.
Fish pond water quality management directly affects the benefits of fish farming. The main indicators for measuring the quality of fish pond water are: pond water temperature, pH value, dissolved oxygen value and transparency.
Dissolved oxygen (DO): Dissolved oxygen refers to oxygen dissolved in the form of oxygen molecules in water, which is an essential substance for the survival and metabolism of aquatic organisms. Generally, the suitable dissolved oxygen value for fish is above 3 mg/L. When the dissolved oxygen value in the water is less than 3 mg/L, the fish stops eating and growing; when the dissolved oxygen value is less than 2 mg/L, the fish will float; and they will begin to die at 0.6-0.8 mg/L.
Water temperature directly affects the metabolic rate, feeding behavior and growth rate of aquatic organisms. Different fish have different requirements for water temperature. Silver carp, bighead carp, grass carp, carp, and bighead bream are warm water fish, and the suitable water temperature for living is 20℃～30℃. Tilapia is a tropical fish, and the suitable water temperature is 25℃～34℃. In order to create a suitable temperature environment for fish, it is necessary to keep track of the temperature changes of the pond water at any time.
The pH value of the pond water affects both the growth and life of fish and the nutrients in the pond water. Therefore, people often use lime to adjust the pH value of the fish pond water. For warm-water fish such as silver carp, bighead carp, grass carp, carp, and bighead carp, alkaline water is preferred, and the suitable pH value is 7.5-8.5 .
Ammonia nitrogen: Ammonia nitrogen is a common pollutant in aquaculture and is toxic to aquatic life, especially at higher pH values
Salinity: For marine aquaculture or certain salt-tolerant freshwater aquaculture species (such as shrimp, marine fish, etc.), salinity is a key parameter that affects the osmotic regulation and health of aquatic organisms.
Turbidity: Turbidity reflects the concentration of suspended matter in the water. Excessive turbidity will affect the light in the water, reduce photosynthesis, and thus affect the growth of aquatic plants and the content of dissolved oxygen.
The so-called transparency refers to the degree of sunlight penetration into the water. Transparency is directly related to water color, and water color indicates the fatness and thinness of the water and the amount of plankton in the water.
Main water quality conditions for trout farming
Water temperature: 10 – 16℃. Too high water temperature will lead to faster metabolism and increased oxygen consumption of trout, and may even cause disease and death; too low water temperature will slow down the growth of trout.
Dissolved oxygen in water: 6 – 10mg/L. High dissolved oxygen helps trout breathe and grow because their metabolism is relatively vigorous.
pH value: 6.5 – 7.5. Overly acidic or alkaline environments will have adverse effects on the physiological functions of trout, such as affecting their osmotic pressure regulation and enzyme activity. The pH value of water quality can be tested regularly, and the appropriate pH value can be maintained by adding lime or other acid-base regulators.
In the shrimp farming process in Thailand, the application of various sensors such as pH sensors, dissolved oxygen sensors, ammonia nitrogen sensors, hydrogen sulfide sensors and temperature sensors plays a key role in accurately controlling the parameters of the farming environment. They can provide accurate data in real time. With the data acquisition and monitoring system, farmers can find problems in time and take effective measures to ensure that shrimps grow healthily in a suitable environment, thereby improving the yield and quality of shrimps and providing strong guarantees for the sustainable development of Thailand’s shrimp farming industry.
