If it's just a rotten piece:

1, maintain water quality

2, stop eating, raise the temperature a bit, and put salt in the tank

3, clean the wound with a cotton swab, and apply Japanese yellow powder.

4, observe.

If the head hole is usually several small holes, late white, ulcerated

The following is the information found, I will not knock the words myself, the method is correct.

1, ready tools and medicines:

Metronidazole, this kind of thing is still quite cheap, the drugstore a few dollars on a large bottle.

Vitamin C

Hydrogen peroxide

Cotton swabs

Toothpicks

Then the metronidazole and vitamin C each crushed into a powder and stirred well.

2, after the head hole is broken, use a toothpick to clean the white rotting flesh slowly, there may be a small amount of blood, but it does not matter.

3, the use of pre-prepared cotton swabs dipped in hydrogen peroxide, will be cleaned up the head hole, clean up the time there will be a lot of small foam, this is the role of hydrogen peroxide. This step is very critical, the head hole on the drug is one aspect, but before the drug must ensure that the carrion has been cleaned up, and has been sterilized and disinfected, otherwise it will greatly affect the therapeutic effect.

4, will be prepared in advance of the powder of metronidazole vitamin C into the head hole, be sure to fill the head hole as much as possible, and then you can put the luohan back to the tank