If the water mold heats up for 30 ℃, it will take about a week to get better. This disease is usually caused by water mold, and white flocs will appear on the surface of fish after the disease. If you want to treat it, you need to raise the temperature properly. When the temperature reaches about 30 ℃, the water mold will stop growing. However, heating alone can't play a therapeutic role, and some drugs, such as oxytetracycline and malachite green, are needed to soak and wash, which can play a role in sterilization.

1. Stop eating: To treat water mold, stop eating first. Usually, after the fish get sick, their appetite will be greatly reduced, and they will not eat after being fed. These foods will be scattered at the bottom of the fish tank, which will be decomposed by microorganisms to produce ammonia nitrogen, which is harmful to the health of fish. Therefore, feeding should be stopped to avoid the deterioration of water quality and affect its recovery.

2. Temperature rise: Because water mold is easy to reproduce below 26 ℃, but most of it will stop growing at 30 ℃, temperature rise is also an essential step in the treatment process. It should be noted that the temperature rise should not be too high at one time, otherwise the large temperature difference will also lead to stress reaction of fish, and even aggravate the disease.

3. Drug: If the water mold is serious, it needs to be treated with drugs. The commonly used drug is malachite green, which has therapeutic effects on many diseases, but it has certain toxicity, so we must be careful when using it. In addition, it can only be used for ornamental fish, not for edible fish.