The role of Copper Sulfate in Aquaculture

Copper sulfate plays three roles in aquaculture: one is to prevent and cure fish diseases caused by protozoa and crustaceans; the second is to mix with raw lime water as a fungicide to kill protozoa in culture ponds; the third is to prevent and cure fish poisoning caused by microcysts and egg dinoflagellates.

The following points should be paid attention to when using copper sulfate:

1. The ability of copper sulfate to kill pathogens varies with the change of water environment. If the water quality is fat and the water temperature is low, the dosage can be increased appropriately, on the contrary, the dosage can be reduced. At the same time, do not apply the pesticide in the morning fish floating head and when the water temperature is high in the morning, preferably between 16:00 and 18:00 in the afternoon.

two。 The safe concentration range of copper sulfate is small. When copper sulfate is actually used, the appropriate concentration should be selected according to different breeds. When in general use, copper sulfate with a concentration of 0.5 × 10-6-0.7 × 10-6 is sprinkled in the whole pool or bathed with copper sulfate with a concentration of 8 × 10-6 for 20-30 minutes.

3. Copper sulfate is often mixed with ferrous sulfate in a ratio of 5 ∶ 2. Ferrous sulfate mainly removes fixtures and removes obstacles for copper sulfate to kill parasites.

4. The water temperature of dissolving copper sulfate should not exceed 60 ℃, otherwise the solution is easy to fail.

5. Some parasites (protozoa and sporozoa that form cysts on aquatic animals) can not be treated with copper sulfate, such as melon disease, treatment with copper sulfate will not only be ineffective but will make small melon worms form cysts and multiply in large numbers, aggravating the disease.

6. Copper sulfate aqueous solution is corrosive to metals, when dissolving drugs and sprinkling drugs, metal utensils should not be used, plastic, wood, ceramics and glassware should be used.

7. Copper sulfate should not be used in combination with alkaline drugs, otherwise the efficacy will be reduced.

Copper sulfate has a stimulating effect on the intestines and stomach, causing nausea and vomiting in mild cases, hematemesis and abdominal colic in severe cases, so protective measures must be taken when in use, wearing protective masks, masks, gloves and so on.