7 Helpful Tips for Summer Koi Pond Care

Learn how to take care of your koi pond during the rainy season.
Learn how to take care of your koi pond during the summertime.

A koi pond can be a stunning addition to almost any yard. They do require work and maintenance though, and one of the most important tasks is keeping the water clean. Here are seven tips to help you keep your pond water clean and maintain your koi pond this summer.

Fish Population

One of the most vital aspects of pond health centers around your fish population. You don’t want too many fish for the space you have. Generally, having more than 10” of fish per 100 gallons of water is considered overpopulation. So, if your four 2” fish (8” of fish total) in your 100-gallon tank have grown to be 5” fish (20” of fish total), you have overpopulation.

Fish Feeding

Try not to overfeed your fish. Any food that they don’t eat decays in the water and can lead to water quality problems over time. Try not to give them more food than they can eat in 2-3 minutes, and make an effort to scoop any uneaten food out of the pond.

Other Debris

Fish food isn’t the only debris that can end up in your pond. Debris like leaves and cut grass often wash in during storms and may break down over time leading to unsafe ammonia levels. Clean out your pond periodically and add beneficial bacteria to maintain balance.

Plant Population

The plants that are in and around your pond play a vital role in pond health and water quality. In the summer, the peak of the season, no more than 40-60% of the surface of your pond should be covered or shaded.

Keep It Cool

You likely know about the dangers of winter weather for ponds, but the heat of summer can also be a problem. When water temperatures are above 75 degrees Fahrenheit, the water may not hold enough oxygen for your fish. Add shade plants to keep things cool, and if that isn’t enough (and you see the fish gulping air at the surface) add an aerator.

Pump Size

Make sure that your pump is the right size for the pond. The pump should be able to circulate the entire volume of the pond every hour. If it isn’t it may be too small, the intake may be blocked by debris, or you may be forcing it to pump the water too high.


Finally, make sure your filter is big enough for your pond too, and when in doubt, upsize. Having a filter that can handle more than your pond is better than a filter that can only handle your capacity at max. Also, remember to clean your filter regularly.

Get In Touch With Matthews Construction And Design Today

At MATTHEWS CONSTRUCTION AND DESIGN, we‘re committed to quality and service and strive for 100% customer satisfaction. We will guide you through the entire process, from tips and ideas for your project to the actual installation. With countless testimonials and a colorful portfolio of our work, you can trust Matthews Construction and Design to handle your product with the best care in the industry.

If you are interested in learning more about what we can do for your home, give us a call at (202) 702-3553 or visit us online.  For more tips, follow us on Facebook, Twitter, Houzz.

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Matthews Construction & Design
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Phone: (202)702-3553