High performance aquaculture equipment manufacturer: To get to know this integrated approach, the first step is to see the behavior of parasites in flowing water. Almost all parasites that cause severe production losses in aquaculture, including Ichthyophthirius multifiliis, Trichodina, Amyluodinium and monogeneans of genera such as Dactylogyrus and Gyrodactylus, have free-swimming larvae or trophont stages that can move temporarily on their own (Buchmann, 2022). These infective stages depend on hydrodynamic forces to spread between tanks. In a connected water system, tomites, theronts and oncomiracidia are blown downstream by the currents and are transported because of sharing drainage lines, distribution manifolds, head tanks, and intermediate waterways, significantly amplifying the transmission potential (FAO, 2024). As they drift, they encounter new hosts at a much higher frequency than they would in stagnant water, allowing populations to expand even when clinical symptoms remain undetectable. Research from freshwater and marine aquaculture systems consistently shows that flowing water accelerates the spread of nearly all protozoan, monogenean, and crustacean parasites (Buchmann, 2022). Without intervention, parasites rapidly establish cyclical reinfection loops, increasing the likelihood of chronic gill irritation, reduced feed uptake, compromised immunity, and elevated mortality.
The enhanced risk resistance provides stable support for farming. Traditional pond farming has weak resistance to natural disasters such as heavy rain and cold waves, and a single extreme weather event can lead to total loss. At the same time, external risks such as water pollution and disease transmission are also difficult to control. RAS systems are mostly indoor or semi-enclosed structures, effectively isolating natural disasters and external pollution. Combined with a complete disease prevention and control system, they significantly reduce farming risks and ensure production stability. In summary, RAS systems solve the problems of resource waste, low efficiency, severe pollution, and high risks in traditional pond farming through their core advantages of water conservation, efficiency, environmental protection, and controllability. They not only align with the sustainable development concept of modern agriculture but also meet the demands of large-scale and standardized industrial development, providing strong support for the high-quality development of the aquaculture industry.
UV performance depends heavily on system design. Undersized sterilizers allow partial bypass, leaving incoming pathogens untreated (Summerfelt, 2003). UV efficiency drops significantly in water with turbidity greater than five NTU, suspended solids above 25 mg/L, or UV transmittance lower than 85% (Desmi, 2025). For this reason, large-scale operations typically place mechanical drum filtration before UV chambers to remove particulates that would otherwise block light penetration. Many commercial aquaculture facilities install redundant UV banks to ensure uninterrupted disinfection even when lamps require maintenance or experience unexpected failure (Li et al., 2023). The dual ozone-biofilter system does not only favor the quality of water, but also the sustainability of the entire farm. Disease-free conditions reduce the usage of antibiotics and minimize losses in operations. Constant water quality enhances efficiency of feed-conversion, growth rates and predictability of harvest. As pressures mount on the world aquaculture to produce high quality seafoods with minimum effect on the environment, zero-outbreak RAS operations are a feasible way forward to sustainable intensification.
Excellent water quality, safeguarding health – High-quality water is crucial for the healthy growth of fish, and flow-through aquaculture systems have a natural advantage in this regard. Flowing water acts like a diligent “cleaner,” promptly carrying away fish waste and uneaten feed, greatly reducing the risk of water pollution. Compared to traditional pond aquaculture, flow-through aquaculture systems offer more stable water quality, higher dissolved oxygen levels, and lower concentrations of harmful substances such as ammonia nitrogen and nitrite. This superior water environment not only reduces the likelihood of fish diseases and the need for medication but also aligns with the fish’s natural swimming instincts, ensuring their vitality and resulting in healthier, more delicious, and more competitive fish in the market. Discover additional information on aquaculture equipment supplier China.
We combine generations of aquaculture expertise, with the latest,most advanced RAS (Recirculating Aquaculture Systems)technology, to create industrial, safe and sustainable aquaculture solutions for the local production of fish and seafood. Our products are sold well in 47 countries and regions. We have built 22 large-scale aquaculture projects with a water volume of 3,000 cubic meters. Our farmed fish are grown in 112 countries and regions. The factory is located in a standardized ecological aquaculture base, covering a number of categories of aquaculture areas, equipped with industry-leading intelligent aquaculture systems. Through the sensor real-time monitoring of water quality, water temperature, oxygen content and other key data, to achieve accurate feeding and environmental control, to ensure that each tail of aquatic products in the most suitable conditions to grow, from the source to ensure the high quality and stability of the product.
To ensure the success of the dual ozone-biofilter system, it is important to maintain the right operation parameters. The values of oxidation-reduction potential in the ozone contact chamber are normally 275 to 320 millivolts (mV). This spectrum aids in efficient reduction of organic matter without generating any undesirable reaction byproducts (Davidson et al., 2021). Before the ozone unit, mechanical drum filters of sixty to one hundred microns in size are used to remove large, suspended solids to enhance ozone efficiency by decreasing the organic load. Optimal values of dissolved organic carbon are four milligrams per liter because beyond this level, the water fails to be clear and promotes the growth of microbes. The concentration of dissolved oxygen below the ozone chamber is usually more than nine milligrams per liter since ozone decomposes naturally to produce oxygen. Having high dissolved oxygen levels greatly improves fish metabolism as well as the rate of nitrification. Most importantly, the amount of residual ozone entering the biofilter should also be zero, this is achieved through constant monitoring to ensure that the nitrifying bacteria is not damaged.