How deep should a koi pond be?

• <div><p>A koi pond should be at least 5 feet deep to keep the fish healthy and ensure they don’t freeze in winter. Koi fish are also known for growing large, so the more room you have, the better. A larger <a href="https://www.angi.com/articles/koi-pond-sizes.htm">koi pond size</a> will allow the fish to grow bigger than a smaller one will, and the more fish you have, the bigger the pond you’ll need. Learn <a href="https://www.angi.com/articles/how-build-pond.htm">how to build a pond in your backyard</a> to ensure it remains functional and aesthetically pleasing for a long time.</p></div>

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Q: How often should I change koi pond water?

• <div><p>A good rule of thumb is to change 5% to 15% of your koi pon&rsquo;s water every week. Partial water changes help keep your koi healthy, and replacing small amounts at a time prevents causing stress for the fish.</p></div>

Q: How often do you need to clean a koi pond?

• <div><p>Deep clean your koi pond at least once a year to keep your fish healthy and your pond in good shape. Water testing, debris removal, and partial water changes should be performed weekly. Seasonal professional service will ensure everything is clean and functioning properly.</p></div>

Q: Should a koi pond be in the sun or shade?

• <div><p>Koi fish should be in the shade and can&rsquo;t be directly exposed to the sun. Consider building your koi pond in a shaded spot or hanging an awning over the top to control the amount of sunlight coming in. Learn <a href="https://www.angi.com/articles/how-develop-landscaping-plan-your-yard.htm">how to design a landscape</a> properly.</p></div>

Q: How do you care for a koi pond?

• <div><p>Though there are a lot of factors that go into caring for a koi pond, the most important maintenance you can do is frequent water checks using a koi pond test strip that checks the water for dangerous conditions. In addition to <a href="https://www.angi.com/articles/pond-maintenance-cost.htm">regular pond maintenance costs</a>, you&rsquo;ll also need to winterize your koi pond if you live in a colder area.</p></div>

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Verified Reviews for Fountain Service pros in Paradise, CA

*The Angi rating for Fountain Service companies in Paradise, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Fountain Service needs.

*The HomeAdvisor rating for Fountain Service companies in Paradise, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Fountain Service needs.

Last update on February 25, 2026

Find Fountain pros in Paradise

Water Feature - Install a Fountain or Waterfall

Serving Paradise, CA and surrounding areas

In business since 2009

Free estimates

Warranties offered

"Babylon Builders did an amazing job in making our backyard look like the backyard all others envy. They added colored stamped concrete, an amazing custom sitting wall, new lawn and decorative rocks. Ron (The Owner) was extremely responsive and listened to our every request and executed our vision flawlessly. Juan (The Foreman) was a Rockstar and kept us informed throughout the process. I highly recommend you use Babylon if you want high end, award winning results!"

+167

Response time1 day

Recommended by87%of homeowners

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Babylon Builders - Home & Landscape Contractor

4.2(

421

)

Water Feature - Install a Fountain or Waterfall

Serving Paradise, CA and surrounding areas

In business since 1985

Free estimates

"Ron has done work for me remodeling my kitchen and bathroom and my backyard. He recently also created a 3D color design for my side yard. It includes flagstone walkway a private seating area what the fountain and vegetable planters. It was done August 22nd. Cost 1,500."

+27

Recommended by86%of homeowners

Water Feature - Install a Fountain or Waterfall

Serving Paradise, CA and surrounding areas

In business since 1999

Free estimates

Warranties offered

"Very pleased with Horizon. Answered promptly when contacted. Listened to my wishes and created and executed a plan that is beyond my expectations. Very pleasant to work with- would recommend them highly."

Recommended by100%of homeowners

Water Feature - Install a Fountain or Waterfall

Serving Paradise, CA and surrounding areas

In business since 2019

Free estimates

Credit card accepted

Sunset Landscapes is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

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Fountains questions, answered by experts

A good rule of thumb is to change 5% to 15% of your koi pon’s water every week. Partial water changes help keep your koi healthy, and replacing small amounts at a time prevents causing stress for the fish.

Deep clean your koi pond at least once a year to keep your fish healthy and your pond in good shape. Water testing, debris removal, and partial water changes should be performed weekly. Seasonal professional service will ensure everything is clean and functioning properly.

Koi fish should be in the shade and can’t be directly exposed to the sun. Consider building your koi pond in a shaded spot or hanging an awning over the top to control the amount of sunlight coming in. Learn how to design a landscape properly.

A koi pond should be at least 5 feet deep to keep the fish healthy and ensure they don’t freeze in winter. Koi fish are also known for growing large, so the more room you have, the better. A larger koi pond size will allow the fish to grow bigger than a smaller one will, and the more fish you have, the bigger the pond you’ll need. Learn how to build a pond in your backyard to ensure it remains functional and aesthetically pleasing for a long time.

Though there are a lot of factors that go into caring for a koi pond, the most important maintenance you can do is frequent water checks using a koi pond test strip that checks the water for dangerous conditions. In addition to regular pond maintenance costs, you’ll also need to winterize your koi pond if you live in a colder area.

The Paradise, CA homeowners’ guide to fountain services

From average costs to expert advice, get all the answers you need to get your job done.

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May 3, 2026May 3, 2026
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