First, the using field and correct using direction for copper sulfate
- Prevention and treatment of fish diseases: Copper sulphate can be used to treat fish diseases caused by protozoa, such as egg whipworm, cryptococcosis, fish worm disease, caterpillar disease, echinococcosis, rot disease, and carapace Fish diseases caused by animals, such as Chinese fish plague. The concentration of the whole pool is 0.7 mg/L in spring and autumn (copper sulfate and ferrous sulfate are prepared in 5:2), and should be reduced to 0.5-0.6 mg/L in summer. When using the medicine, try to choose sunny afternoon and afternoon. The whole pool should be evenly spilled. After the medicine is used, it is necessary to prepare for the rescue of the fish floating head.
2, fish medicated bath: common medicated bath concentration of 8 mg / liter (copper sulfate and ferrous sulfate according to 5:2), or copper sulphate 8 mg / liter plus bleaching powder 10 mg / liter, medicated bath 10-30 minutes These two formulas can kill bacteria and protozoa on the surface of the fish and on the cockroaches, and are also effective against the viscera that do not form cysts.
3, tools, food disinfection: fishing gear with 20 mg / liter of copper sulfate solution soak for half an hour, can kill the protozoa. Food field disinfection can be carried out regularly during the fish disease epidemic season. Each time, 100 grams of copper sulfate and 40 grams of ferrous sulfate are used. After being dissolved in water, it is sprayed around the food field. The area is controlled at 80-100 square meters. Eat once a day for 2-3 days to prevent protozoal diseases.
4. Control harmful algae: Copper sulfate can be used to control fish poisoning caused by Microcystis and Oxygen. The concentration of the whole pool is 7 mg / liter (copper sulfate and ferrous sulfate are prepared in 5:2). After the medicine, the aerator should be started in time, or the water should be properly added on the morning of the second day to prevent the algae from dying. Toxic substances cause fish poisoning. With a concentration of 0.7 mg/L (copper sulfate and ferrous sulfate in 5:2), the whole pool is splashed, and the diseases of fish, shrimp, crab and snail caused by the adhesion of green mud and filamentous algae can be removed.
Second, the use of copper sulfate should pay attention to the problem
1. Copper sulfate and ferrous sulfate have a synergistic effect. The ferrous sulfate itself has no bactericidal effect, but it can promote the penetration of the main drug into the body, enhance the permeability and improve the efficacy of the main drug. Therefore, when using copper sulfate, it should be combined with ferrous sulfate.
2. The safe concentration range of copper sulfate is small, and the volume and dosage of water should be calculated accurately. First calculate the volume and depth of the pool to calculate the volume of the water, and then calculate the dosage according to the determined dose (medication concentration). Such as a concentration of 0.7 mg / liter (copper sulfate and ferrous sulfate in 5:2), that is, a concentration of 0.7 parts per million, that is, adding 0.7 grams of copper sulfate and ferrous sulfate in 1 million milliliters of water, and 1 cubic meter of water is exactly 1 million milliliters, the total dosage is calculated as: water volume (cubic meters) × 0.7; and because the ratio of copper sulfate to ferrous sulfate is 5:2, the total dosage is 5 /7=Number of copper sulfate, total dosage × 2/7 = amount of ferrous sulfate.
3. The use of copper sulfate and ferrous sulfate should be dissolved by heating, but it should not be dissolved with hot water above 60 °C to avoid failure. Also do not use metal utensils to dissolve and dispense to prevent corrosion of the vessel and reduce the effectiveness of the drug.
4. When the water quality is relatively fat, the amount of copper sulfate should be increased, but the maximum is 1 mg/L.
5, some parasites can not be treated with copper sulfate, such as small melon disease, treatment with copper sulfate is not only ineffective, but will make small melons form cysts and multiply.
6. Copper sulfate contains copper ions, which are easy to accumulate in fish and cause side effects, so they cannot be used continuously.