Bleach powder is mentioned in aquaculture, and everyone must be familiar with it. 50 pounds is only about 100 yuan, due to low price, wide range of functions, and quicklime and called the first fishing medicine is not excessive. So how much do you know about bleaching powder?
What is bleaching powder?
Bleach powder is produced by reacting chlorine gas with lime. It is a white powder with a strong chlorine odor, which is a mixture of calcium hydroxide, calcium chloride, and calcium hypochlorite, and its main component is calcium hypochlorite. It is very unstable, hygroscopic, and susceptible to decomposition by light, heat, water and ethanol.
What is the role of bleaching powder in aquaculture?
1. Clear ponds and improve pond environment
Calcium hypochlorite, the active ingredient of bleach powder, decomposes hypochlorous acid and hydrochloric acid, hypochlorous acid is further decomposed into hydrochloric acid and atomic oxygen, the oxidation force of this atomic oxygen is extremely strong, and microorganisms are killed when they contact it; at the same time, part of hypochlorous acid can also act with hydrochloric acid to produce chlorine gas, which has a strong killing effect on pathogenic bacteria, chlorine gas can also be combined with hydration, and then generate atomic oxygen and sterilization. Therefore, it is often used to clear ponds and improve pond environments. Reference amount of clear pond with water: 20mg/L
2. Prevention and treatment of bacterial skin diseases, cheek disease and bleeding diseases
Also due to the strong oxidation and the killing effect of pathogenic bacteria, it is often used as a daily for the prevention and control of aquatic bacterial diseases, and the reference amount of the whole pool is 1.0mg/L~1.5mg/L
3. Process cyanobacteria and moss
Bleach powder is a very corrosive oxidant, for all organic organisms have a strong inactivation effect, the principle is to dissolve all the protein macromolecules that make up the living body, and dissolve them into inanimate inorganic small molecules. Therefore, it is also used in the treatment of cyanobacterial moss, but pay attention to timely detoxification to avoid harming farmed species.
Precautions for bleaching powder in aquaculture
1. Due to the strong irritation, it is necessary to protect it when contacting and avoid contact between the eyes and the skin.
2. The nature of bleach powder is unstable, the current content of bleach powder on the market is different, there are 28%, 35% and other content, when using it, it is necessary to correctly calculate the dosage, and it is now used, and the application time should be in the cloudy day or evening.
3. Bleach powder itself has certain hazards, such as high temperature, water, acid or grease will cause combustion explosion, and metal powder will increase its danger. Therefore, avoid using metal containers when using them.
4. Do not mix with acid, ammonium salt, quicklime and other organic compounds, otherwise it will affect the efficacy.
5. Store in a cool, ventilated warehouse. Keep away from fire and heat. The library temperature does not exceed 30 °C, and the relative humidity does not exceed 80%. Packaging requires a seal and is not in contact with air.
Bleach powder, whether in the clear pond or in the prevention and control of diseases, can meet the requirements of pollution-free ecological breeding of aquatic products, but it is a chemical, the amount should be controlled when using, and the drug suspension period should be greater than or equal to 5 days, and if necessary, detoxification should be carried out. Avoid the occurrence of poisoning of aquatic product species.
(The material comes from the Internet, only for the reference of breeding exchanges)