Why fish species die in winter

First, the reasons for the death of fish species in winter Hypoxia in water. This is one of the main reasons for winter deaths. Causes of hypoxia are: lean water, too little phytoplankton in the water, resulting in insufficient oxygen for photosynthesis; excessive stocking density, shallow water or too much organic matter in the water, consumption of large amounts of oxygen, and lack of oxygen in the water Wastewater or toxic substances inflow, consume limited oxygen and produce harmful gases. 2. Fish species are thin and weak. During the winter, the fish species consumes large amounts of body, and the body weight of the fish species can be reduced by 10% to 15% after a long period of overwintering. If the nutrients in the lean and constrained species are not enough for winter consumption, they will die. 3. Poor management. In case of abnormalities caused by premature fish ponds or improper operation, fish body injuries, shallow water in ponds, lack of special personnel management and timely detection of problems, and measures to be taken will result in the death of overwintering fish species. Second, prevention methods Wintering pond selection and trimming. Choose as a wintering pond the leeward sun, good water retention performance, less silt in the bottom of the pool, more than 2 meters depth, and convenient drainage and irrigation. Before wintering, clear ponds must be thoroughly cleared. 2. Strengthen the cultivation. To cultivate large-sized fish species with robust physiques and strengthen post-management, and appropriately feed concentrates before winter and enhance the body composition of fish species. 3. In time and pond, moderate density. Ponds and ponds are generally selected to be carried out on sunny days at a water temperature of 5°C to 10°C. Care must be taken to avoid fish injuries. The specifications of fish species should be the same. Each mus of water can be stocked with 40,000-50,000 long fingerlings of 10-13 cm in size. 4. Strengthen management. Before wintering, manure 250 kg fertilization water per acre. Check the quality of water and fish species frequently, check whether there is any leakage in the pond, and find remedial measures if problems are found.

Biocide Technical Ingredients

All water based products have plenty of nutrients and water to support microbe growth under favorable conditions.  Microbes invade water based products from multi-point sources, such as contaminated raw materials, poor plant hygiene, untreated water, and not properly preserved recycling materials.  While adding in-can preservatives into the products should not excuse a factory from Good Manufacturing Hygiene Practices (GMHP), proper use of in-can preservatives coupled with GMHP can dramatically minimize the chance of microbial tolerance development, and assure unspoiled products to customers. 

Biocides formulators often use several types of in-can preservatives as active ingredients in their biocidal products for various industrial water based products. One of these active ingredients is benzisothiazolone (BIT).  It has several distinct performance advantages, including good stability at high pH, good stability in the presence of reducing agents, and broad spectrum of activities against many microbes.  

Sunshine Biotech supplies to all industrial biocides formulators with high quality BIT technical ingredients. Besides of BIT, we also provide its derivative, like BBIT, MBIT etc.

Biocide Technical Ingredients

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