It is suggested to use filtration system and nitrifying bacteria to establish an ecosystem. When the water is good, the symptoms of redness can disappear.
1, red belly indicates that there is a problem with the water quality;
2. Quickly increase the filter element and change one-third of the water in 3 days;
3. Cultivate some nitrifying bacteria to purify water;
Then feed the food to the pig's nose, and the unfinished food must be fished up.