Correct preparation and use of fish body disinfectant solutions

1. Bleaching powder solution

Prepare at a concentration of 1 gram of bleaching powder per 100 kg of water. At a water temperature of 10-15°C, soak the fish for 15-30 minutes; this has a good effect on preventing bacterial fish diseases.

2. Copper sulfate solution

Prepare at a concentration of 0.8 grams of copper sulfate per 100 kg of water. At a water temperature below 15°C, soak the fish for 20-30 minutes; this can kill various parasites such as gill trichodinids, trichodinids, and chilodonella.

3. Potassium permanganate solution

Prepare at a concentration of 1 gram of potassium permanganate per 50 kg of water. At a water temperature below 20°C, soak the fish for 20-30 minutes; this can kill parasites such as Gyrodactylus, Dactylogyrus, trichodinids, and chilodonella.

4. Salt solution

The commonly used concentration is 2-4 kg of salt dissolved in every 100 kg of water. At a water temperature of 10-15°C, soak the fish for 10-15 minutes; this can kill trichodinids, chilodonella, slime bacteria, and others on the fish body, and can prevent bacterial diseases and certain parasitic diseases in fish.

5. Trichlorfon solution

Dissolve 50 grams of 90% crystalline trichlorfon in every 100 kg of water. Generally soak the fish for 5-15 minutes; this can kill parasites such as Gyrodactylus, Dactylogyrus, fish lice, and anchor worm larvae.

6. Precautions

First, the solution should be prepared and used immediately.

Second, the dosage must be accurate; do not arbitrarily increase the concentration or prolong the soaking time.

Third, it is best to prepare the solution in wooden or plastic containers; metal containers should not be used.

Fourth, stocking fish fry should be done on a sunny day with a suitable temperature (10-15°C).

Fifth, handle the fish carefully and never injure the fish body; avoid direct sunlight during the medicated bath.

Sixth, never leave the fish unattended during the medicated bath; observe closely, and if the fish show abnormal signs such as gasping at the surface, darting about, or turning belly up, immediately remove them and place them in clean water to prevent poisoning and death.

Seventh, the used medicated solution must never be poured into fish ponds; it should be properly disposed of.