June to September is the peak season for tilapia growth, but during this time, water quality changes frequently due to increased feeding and the occurrence of adverse weather. Proper water management and healthy breeding practices are essential to ensure higher production and income. Neglecting these can lead to losses despite all efforts. The tilapia market looks promising this year, but unpredictable climate conditions make water quality management even more critical. This article discusses effective water quality management strategies during the peak season, offering practical guidance for tilapia farmers.
**Maintaining Excellent Water Quality**
Water source is the most fundamental aspect in tilapia farming, as it directly affects water quality and overall success. A good water source should be stable, clean, and free from pollution, meeting national fishery standards. It should also allow for easy water intake and drainage, with proper filtration systems in place. Fish nets should be installed at the inlet and outlet to prevent wild fish and predators from entering the pond. Before using the water in the breeding pond, it should be filtered and disinfected. Common disinfectants include 25–30 grams of quicklime or 1 gram of bleaching powder per cubic meter, along with 0.5 grams of trichlorfon to eliminate pests.
During the rainy season, flooding risks increase, so it's important to maintain strong embankments and efficient drainage systems to prevent damage from floods and protect the fish.
**Rational Fertilization for Better Water Conditions**
Fertilization plays a key role in tilapia farming by supporting plankton growth, which increases dissolved oxygen and nutrients in the water. Organic fertilizer should be applied every 7–10 days from May to June, while chemical fertilizers should be used every 4–6 days from July to September. Water transparency should be maintained around 25 cm, with a dark brown color. Over-fertilization should be avoided, and organic manure can be applied at 100–150 kg per mu, with urea or ammonium sulfate added accordingly. Biofertilizers can also be used based on water temperature and quality.
**Scientific Feeding for Stable Water Quality**
Feeding during the peak growth period significantly impacts water quality. Tilapia should be fed according to weather, water conditions, and their feeding behavior. High-protein feeds (32–35%) should be given initially, with daily feeding amounts at 3–5% of the total fish weight. As fish grow, the protein content and feeding amount should be adjusted accordingly. Feed should be given twice a day, with fixed feeding stations in each pond. Monitoring fish behavior and adjusting feed amounts helps avoid overfeeding and maintains water quality.
**Regular Water Changes for Quality Control**
High water temperatures and frequent feeding can lead to rapid water quality degradation. Regular water changes, about 10–20 cm every 7–10 days, help maintain fresh conditions. Dissolved oxygen levels should stay above 3 mg/l. Aeration is necessary during low-oxygen periods, especially when fish show signs of floating heads. In reservoir cages, regular cleaning and checking for damage is essential to ensure good water exchange and prevent disease spread.
**Disease Prevention and Routine Maintenance**
June to September is a high-risk period for diseases. Regular disinfection with lime, maintaining pH between 7.0 and 8.0, and monitoring water parameters like transparency and temperature are crucial. Biological agents can also be used to improve microbial balance. Daily patrols, water testing, and prompt removal of uneaten food and debris are essential to prevent disease outbreaks and maintain water quality.
**Monitoring and Adjusting Stocking Levels**
As tilapia grow rapidly, stocking density increases, raising the risk of water quality decline. Regular monitoring, timely harvesting, and controlled stocking help prevent issues. If fish grow too fast and exceed the pond’s capacity, some should be harvested to reduce stress. This not only improves current conditions but also prepares for next year’s breeding cycle.
Dehydrated Scallion,Dehydrated Spring Onion Rings,Dehydrated Scallion Powder,Dried Green Scallion
Taizhou Shubenshu Food Co.,Ltd , https://www.lvweifoods.com