Preparation of commonly used disinfectant solution for fish

Washing and disinfecting fish with liquid medicine is an indispensable work for the release of fish fry and an effective measure to prevent fish diseases. This paper introduces the preparation and application of several common washing disinfectants.

1. Bleaching powder solution

100 kg of water is prepared with 1 g of bleach, that is, a bleach solution with a concentration of 10 mg / kg. When the water temperature is 10 ~ 15 ℃, washing the fish for 15 ~ 30 minutes can kill all kinds of pathogenic bacteria on the fish, and play a good role in preventing bacterial red skin disease and Gill rot.

two。 Potassium permanganate solution

It is prepared according to 2 grams of potassium permanganate dissolved in 100 kg water, that is, the concentration of potassium permanganate solution is 20 mg / kg. At the water temperature of 10-20 ℃ and washing the fish for 20-30 minutes, it has a special effect on paragonimus and Anchorage, and can kill the third generation of parasitic fish, ring worms, rotifers and oblique tube worms.

3. Copper sulfate solution

According to the dosage of 100 kg of clear water dissolved into 0.8 g of copper sulfate, that is, the concentration of copper sulfate solution is 8 mg / kg. The water temperature is below 15 ℃. Washing the fish for 20-30 minutes can kill many parasites such as Trichuris branchii, rotifer, oblique tube, trichiasis and calicium, and has a certain effect on the prevention of fish diseases caused by these parasites.

4. Salt solution

The commonly used concentration is 3%-5%, that is, every 100 kg of water is dissolved into 3-5 kg of salt. Washing fish at 10-15 ℃ water temperature for 10-15 minutes can kill rotifer, calicium, oblique tube worm, bacteria, water mold, etc., and play a good role in preventing bacterial Gill rot, water mold and some parasitic diseases.

5. Trichlorfon liquid

Prepare with 50 grams of 90% crystal trichlorfon for every 100 kg of water. Generally, the fish body is soaked for 5 minutes and 15 minutes, which has a special effect on monozoan trematodes and anchor head oysters, can kill the third generation of parasitic fish, ring worms, anchor head fish larvae, etc., and plays a good role in preventing diseases caused by these parasites.

6. Mixture of bleaching powder and copper sulfate

Every 100 kg of water is prepared with 1 g of bleach and 0.8 g of copper sulfate. Dissolve the two drugs in water, and then mix the two solutions when in use. Washing the fish at the water temperature of 10 ~ 15 ℃ for 20 ~ 30 minutes has a certain effect on the prevention of fish diseases caused by bacterial diseases and some parasites.

7. Matters needing attention

First, the liquid should be used whenever you want.

Second, the dosage should be measured accurately, and the washing time should not be increased or prolonged at will.

Third, the use of potassium permanganate solution should not be carried out in direct sunlight.

Fourth, when washing, you can't leave people. You should pay attention to observation. When you find floating head, swimming or tumbling, you should immediately fish it out and put it into the pool to prevent poisoning and death.