Welcome to Koi-Care.com, where you’ll find lots of useful information on koi and koi ponds.


What is Koi-Care?

Hi, I’m Grant and I’m a veteran fish biologist. I love fish and so do you -that’s why you’re here! I like to raise koi and tackle issues surrounding them and the water they live in. Big pond or small, come on in!


What Koi-Care Does

This site is here to help folks that have koi ponds but want to know more.  You will find information on this site that covers fish diseases, water quality issues, algae issues and a whole lot more.


What You’ll Find Here

You will find in-depth articles on lots of the common koi pond issues.  You will also find koi pond “stuff” that you may need to solve a problem or make your pond a better place for your koi.


Explore Articles & Research Products

What Are the Ideal Water Conditions for Healthy Koi? (9 factors discussed)
Pond Care & Filtration

What Are the Ideal Water Conditions for Healthy Koi? (9 factors discussed)

Proper koi fish care is an ongoing process (like many things in life). There will certainly be a lot of
The Major Koi Varieties and Their Traits
General Koi Information

The Major Koi Varieties and Their Traits

Presented here are what many consider the 13 major varieties of koi or “Nishikigoi”.  There are certainly some koi practitioners that
Choosing Koi Pond Plants: Pros & Cons of 11 Common Types
Aquatic Plants

Choosing Koi Pond Plants: Pros & Cons of 11 Common Types

Adding plant life to a koi pond helps improve pond life for koi, as well as adding beauty to the
Top 5 Most Common Koi Pond Problems (and their Solutions)
General Koi Information

Top 5 Most Common Koi Pond Problems (and their Solutions)

Having a Koi pond can not only increase the visual appeal of a property, but it can also aid in
Selecting Food for Your Koi
Food and Nutrition

Selecting Food for Your Koi

Koi are omnivores, which means that they consume both plant and animal matter. In fact, they often prefer eating aquatic
How to Breed Koi for Profit
Breeding Koi

How to Breed Koi for Profit

It’s not as out of reach as you might think to breed Koi fish for profit, as thousands around