Finrot Disease

What causes Finrot?

Finrot is probably one of the most preventable and easy to cure goldfish diseases. If left untreated, it can ill the fish and also infect all the goldfish you have in the tank. This is a bacterial infection.

The most common cause of Finrot is poor water quality. Tank may also be overcrowded and fish are stressed from noise pollution. Rough handling, fighting or very low water temperature(below 50oF) can cause this disease.

What are the symptoms?

They are very easy to notice and may include:

  • split and/or ragged fins, often with a white edge to them
  • red streaks on fins

Click image to enlarge.

How to cure Finrot?

Day 1 - do an immediate 40% water change and examine all aquarium conditions. You will want to follow the 6-day treatment to cure this disease.

Premix these ingredients before adding to the main tank:

Salt: 1 tablespoon per 10 gallons(aquarium salt, kosher salt, pure rock salt or sea salt)
Epson salt: 1 teaspoon per 10 gallons
Melafix: 1/2 teaspoon per 10 gallons if pH not over 7.5

Combine salts into 1/4 cup of warm water to dissolve. Mix to dilute Melafix in a freshwater Bucket.

! Replace only 5%(of fresh water) every 15 minutes to reduce the risk of shock. Add water treatment to the water you add to the tank to remove ammonia and chlorine.

Day 2 to 5 - you will repeat the following process:

  • perform a 20% partial water change using the directions on 1st day
  • add salt: 1 tablespoon per 10 gallons
  • don't forget to dilute and mix thoroughly in a 1 gallon of tank water before adding to the tank

Day 6 - you will be reversing the treatment by performing only water changes for 5 more days

Day 11 - repeat entire treatment but use only salt. If after 30 days signs of infection remain, start treatment again.

Recommended Medicine

Here you can find the medicine listed above. Click the image to find how you can purchase the desired medicine.

How to prevent Finrot?

  • Maintain good water quality
  • Keep proper water parameters
  • Fresh healthy food in small amounts

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