First, clear the pond. Every winter, after the fish is out of the pool, drain the pool water, remediate the pool, remove the poolside weeds, and dig up excess silt to allow the pool to freeze for about a week. This can loosen the soil surface of the pond, improve the ventilation conditions, accelerate the conversion of organic matter into nutrients in the soil, and achieve the purpose of eliminating pests and diseases.
Second, the drug clear pond. In addition to farmed fish, ponds are often mixed with wild fish and shrimps and various organisms such as bacteria, snails, cockroaches, blue mud moss, aquatic insects, etc. Some of them can cause fish diseases themselves, and some are pathogenic media. Some will also directly damage farmed fish. The drug clear pond can play the role of removing the wild and eliminate pathogens and is an important measure to prevent fish diseases.
Commonly used clear pond drugs are lime, bleach, tea cake, ammonia and so on. Among them, quicklime, ammonia, and bleached clear ponds have many advantages. Quicklime can not only kill pathogens, intermediate hosts, pathogen-carrying animals and predators in the pond, but also improve the soil, water quality and fertilization; ammonia, bleaching powder and quicklime have the same killing effect, and ammonia water has fertilizing effect. Tea cake sterilization effect is not large, the disease prevention effect is slightly poor.
There are two kinds of quick-lime clear ponds. One is dry pond clear pond. First dry the pond water or leave 5-10 cm of water, and use 50-75 kg of quick lime (if the silt is more, increase lime by about 10%). In the clear pond, excavate several small pits at the bottom of the pond, or use a wooden barrel, etc. to put the quick lime into the water and dissolve it. Do not wait for cooling and immediately spill it around (including the foot of the embankment). The next morning, it is best to use the turbulent pond mud. The disinfection effect is better. The other is the clear pond with water, the average depth of 1 meter per acre lime 120-150 kg, usually quicklime into a cask or tank dissolved immediately after the whole pool. After 7-8 days, the drug disappears and the fish can be released. Due to the hardness of the water, quicklime reacts with magnesium and the like, and the clear pond with water has a better disease-preventing effect than the dry pond with clear pond, but the amount of quick lime is large and the cost is high. Lime clear ponds can quickly kill wild fish, various eggs, aquatic insects, parasites and pathogens, etc. Moreover, due to the alkali free, neutralization reaction can occur, changing the acid environment, making the pond slightly alkaline, At the same time, the calcium content is increased, providing nutrition for aquatic plants and animals.
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More details is following.
Season:from NOV.to FEB.next year.
Packing:20kgs/CTN 25 tons/40`HC
Ingredients:horseradish
Delivery:20 days
MOQ:5TONS
Payment:T/T
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