Koi care collection

Koi Fish Diseases

A growing library of clear, useful guides about koi fish diseases.

Is Baking Soda Safe For Koi?
Koi FishJun 25, 2022

Is Baking Soda Safe For Koi?

Baking soda is a common household item that can have many uses, including cleaning and cooking. But is it safe to use around koi fish? For more pond-care guidance, read Why Do Koi Stay At The Bottom Of The Pond? and review MSD Veterinary Manual: Fish diseases.

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Can You Add Vinegar To A Fish Pond?
Koi FishJun 25, 2022

Can You Add Vinegar To A Fish Pond?

Vinegar is a popular household item that can have many uses, including cleaning and cooking. But did you know that you can also use vinegar to help maintain a healthy fish pond? Vinegar can be used to control algae growth, remove excess nutrients from the water, and lower the…

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Can Betadine Be Used On Fish?
Koi FishJun 25, 2022

Can Betadine Be Used On Fish?

Betadine is an antiseptic medication that is used to cleanse wounds and prevent infection. It is available in both a liquid and a cream form. For more pond-care guidance, read Can I Use Water Softener Salt In My Koi Pond? and review MSD Veterinary Manual: Fish diseases.

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How Do I Test My Pond For Salt?
Koi FishJun 25, 2022

How Do I Test My Pond For Salt?

A pond can become salty for a variety of reasons, including runoff from nearby roads or fields, evaporation, and mineral deposits in the soil. If you suspect that your pond is salty, there are a few tests you can perform to confirm this. For more pond-care guidance, read What…

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Do Koi Like Clear Water?
Koi FishJun 25, 2022

Do Koi Like Clear Water?

Koi are a species of freshwater fish that are popular in both Japan and China. They are often kept in ponds and aquariums, and are known for their brightly colored scales. For more pond-care guidance, read Do Koi Fish Need Light? and review MSD Veterinary Manual: Fish diseases.

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How Do You Use Baking Soda In A Koi Pond?
Koi FishJun 25, 2022

How Do You Use Baking Soda in a Koi Pond?

Baking soda is a common household item that can have many uses, including in a koi pond. When used in a koi pond, baking soda can help to maintain the pH levels of the water, making it a safer and more comfortable environment for the fish. For more pond-care guidance, read How…

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Can I Add Baking Soda Directly To My Fish Tank?
Koi FishJun 25, 2022

Can I Add Baking Soda Directly To My Fish Tank?

No, you should not add baking soda directly to your fish tank. Baking soda can be used to adjust the pH of your fish tank water, but it should be used sparingly and only when necessary. For more pond-care guidance, read What Happens If You Add Too Much Beneficial Bacteria? and…

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Is Vinegar Safe For Ponds?
Koi FishJun 25, 2022

Is Vinegar Safe For Ponds?

Vinegar is a popular household item that can have many uses, including cleaning and cooking. But is it safe to use vinegar around ponds? For more pond-care guidance, read What Kind Of Water Do Koi Fish Need? and review MSD Veterinary Manual: Fish diseases.

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What Causes Red Spots On Koi Fish?
Koi FishJun 25, 2022

What Causes Red Spots On Koi Fish?

Red spots on koi fish are most often caused by a bacterial infection. The bacteria that cause red spots are usually present in the water, and koi are susceptible to infection when they are stressed or their immune system is compromised. For more pond-care guidance, read How Do…

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Why Is My Koi Staying At The Bottom?
Koi FishJun 25, 2022

Why Is My Koi Staying At The Bottom?

Koi are a type of carp and are popular in both ornamental ponds and water gardens. They are often brightly colored and can grow to be quite large, making them a beautiful addition to any outdoor space. For more pond-care guidance, read Do Koi Get Lonely? and review MSD…

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How Do You Get Rid Of Koi Flukes?
Koi FishJun 25, 2022

How Do You Treat Koi Flukes?

Koi flukes are a common parasite that can infect koi fish. They are small, flatworms that attach themselves to the koi's body and feed on their blood. For more pond-care guidance, read Do Fish Heal Themselves? and review MSD Veterinary Manual: Fish diseases.

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Why Does My Fish Have Poop Hanging From It?
Koi FishJun 25, 2022

Why Does My Fish Have Poop Hanging From It?

Fish poop, or excrement, is composed of waste products including undigested food, bacteria, and metabolic by-products. It is typically expelled through the fish's anus, and can often be seen hanging from the fish's body. For more pond-care guidance, read Do Koi Fish Eat Leaves?…

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