The yellow powder can be soaked for 10-30 minutes at a time, if the concentration is relatively low, it can also be soaked all the time. This drug is also called furacilin, which is a common ornamental fish drug. Because it can treat many diseases, it is also called a panacea. It should be noted that if overdose is taken, it may lead to yellowing of water body and even drug damage, so we must pay attention to observation after use, and change water in time to improve water body environment.

1. Suit the remedy to the case: Yellow powder must be used to suit the remedy to the case. Although it is called a panacea, it can not cure all diseases. It mainly treats some bacterial diseases, such as head hole disease, printing disease, gill rot disease, congestion disease, red skin disease and so on. If the disease is caused by parasites, this drug will have no effect.

2. Dosage and usage: Pay attention to the usage and dosage of yellow powder. Usually, there are two uses, one is full-cylinder splashing, which is more convenient for a large number of fish to be sick, and the concentration is generally 1.5 ppm. The other is a separate medicated bath, the concentration can rise to 20ppm, but the soaking time is less than half an hour.

3. Change water properly: Usually, after using yellow powder, change water every one to three days, which can improve water quality, reduce drug content in water and help fish recover. If the fish's condition has been alleviated after changing water, it is not necessary to continue taking medicine. If it has not recovered, it should be soaked with medicine.