Minerals That Can Harm Koi Fish

There are several things that you have to worry about when you have a koi pond. The last thing that should concern you are the various minerals that can harm your fish. But this is a legitimate concern, and one that if not taking care of, can pose a major problem for your pond.

The koi hobby is a very satisfying and enriching hobby, but there are a a bunch of questions that you should have answered AFTER you have it up and running. I’m talking about questions like :

What kind of filtration should you have for your pond?
How do you maintain quality conditions within the pond?
What steps do you take when your koi are sick?
How do you cure your fish ?
And how do you separate the sick fish in the pond without jeopardizing the rest of the pond?
And last but not least, what minerals can harm your koi?

The minerals that can harm your fish are in your pond. Huh? Yes. The minerals that can harm your fish are IN your pond. These minerals are in the form of algae and bacteria that are naturally occurring inside your ponds ecosystem. They are naturally occurring but, by doing one innocent thing YOU can make them become a killer of your fish. What is that ONE innocent thing you may ask?

By feeding them too early in the spring…!

Yes, it’s true. By feeding your koi too early in the spring you can open them up to all kinds of infection and disease. How you may ask? You must remember that your fish are cold-blooded animals and henceforth do not function well in temperatures below 58 degrees. Do you know what else doesn’t function in temps below 58 degrees? That’s right, the beneficial bacteria that your fish need to survive.

When you feed your fish too early in the spring, all the protein that they eat is redeposited into the pond. This waste in turn, becomes HARMFUL bacteria because the water temp is below 58 degrees. The beneficial bacteria need temps of 58 degrees and above to function properly. And so does your koi’s immune system.

I know that your fish look like they are hungry and waiting for you to feed them, but believe me, if you do not want to cause future harm to your koi, do not feed them early!


There are a number of things that you need to know when you begin the koi hobby and there is no better resource than this website.The website will answer various questions that only an experienced koi pond hobbyist would know. Not only will you know exactly which filtration to use, you will also know exactly how to quarantine your sick koi. Making sure that your entire pond is not infected.You will also learn about the different kinds of koi. A step by step easy to use guide on building your koi pond. You will learn exactly how to feed your koi. There is an entire chapter on the nutrition of your koi. How to breed your koi, which fish that you should never add to your koi pond. And last but not least, the minerals that can harm your koi fish.


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