How long does it take for a fish to die, and how many fish on the surface of the water can be poison

The time at which rotenin can kill fish is not fixed, because different concentrations of rotenin have different effects on fish. In general, low concentrations of rotenol may not be able to cause fish death in a short period of time, while high concentrations of rotenol can cause fish death within minutes to tens of minutes.

At the same time, the effects of rotenol on different species of fish are also different. Some fish may be sensitive to rotenol and die quickly after exposure to low concentrations of rotenol; While some fish may have some resistance to the toxicity of rotenol, it takes a higher concentration and a longer time to cause its death.

Therefore, it is not possible to give a specific, universal answer to this question. If you need to use rotenol for fish control, determine the concentration and use method according to the actual situation, and ensure that the relevant legal regulations and safety measures are followed.

The more suitable size of the fish pond is one acre, which is extracted from the roots of the aquatic plant fish vine, which contains a certain toxicity and is usually used as a pesticide, which is quite safe in agriculture. It is necessary to pay attention to the time of use in the fish pond, not too much, otherwise the fish will die in a large area, so it is necessary to be more cautious when using it on the edge of the fish pond. However, the effect of cleaning the fish pond is still very good, not only can the trash fish in it be eliminated, but also the parasites inside can be better removed, and the effect of the medicine will disappear completely after about ten days after each dose.

Rotena only damages the fishnervous system, non-toxic to people

Hello dear, a bottle can poison the fish on the surface of an acre of pond. The size of the fish pond is one acre, which is extracted from the roots of the aquatic plant fish vine, which contains a certain toxicity, and is usually used as a pesticide, which is quite safe in agriculture. Pay attention to the time of use in the fish pond, not too much, otherwise the fish will die in a large area, so use it on the edge of the fish pond to be more cautious.

However, the effect of quietly digging and cleaning the fish pond is still very good, not only can the trash fish in it be eliminated, but also the parasites inside can be better removed.

Summary. Dear, the fish vine essence is more suitable for the size of one acre, this is extracted from the roots of the aquatic plant fish vine, contains a certain toxicity, usually used as a pesticide, in agriculture is quite safe.

Kiss, the fish vine essence is more suitable for the size of the fish pond is one acre, this is extracted from the root of the aquatic plant fish vine, which contains a certain toxicity, and is usually used as a pesticide, which is quite strong and safe in agriculture.

Because it is necessary to pay attention to the time of use in the fish pond, not too much, otherwise the fish will die in a large area, so it is necessary to be more cautious and focus on the use of fish ponds. However, in terms of the effect of cleaning the fish pond, it is still quite envious, not only can the miscellaneous manuscript fish in it be eliminated, but also can better remove the parasites inside, and the effect of the medicine will completely disappear after about ten days after each dose. Pat and merge.

If you come into contact with rotenone, you should immediately take off the contaminated clothes and rinse with plenty of water. Eye contamination is rinsed with 2 sodium bicarbonate solution. Observe for a period of time, and give corresponding ** according to clinical manifestations.

According to the principle of chemical contact dermatitis, such as applying dermatitis and plaster, Wang You should also pay attention to prevent secondary infection. At the same time of taking herbal medicine, it should be given rehydration, and appropriate supplementation of vitamin C, vitamin B1, vitamin B6, vitamin B12, vitamin B12, etc., vitamin B1, vitamin 6, vitamin B12 can also be injected intramuscularly to promote the excretion and recovery of poisons.

Attention should also be paid to replenishing the water and electrolytes lost in vomiting and diarrhea to maintain the stability of the internal environment. There should be plenty of glucose in the fluid to provide the necessary energy.

I'll make a list of a few points for you, you can take a look.

Finally, don't worry, if you still don't understand anything, welcome to consult me.