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

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Last update on March 16, 2026

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Fountains FAQs, answered by experts

When deciding whether or not to turn off your pump, you should consider your area’s climate and the aquatic life in your pond. If you live in an area with freezing winter temperatures and don’t have any wildlife, keeping your pump on could damage it. If you have aquatic life but live in a colder climate, you might consider keeping your pump running and adding a pond heater.

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.

The average pond maintenance cost is $2,000. But how much you pay to take care of your pond depends on multiple factors, such as the size of the pond and whether fish live in it. Your area's climate also affects the overall maintenance cost, as you may need to winterize your pond to protect it and any aquatic life in it during the colder months.

To maintain your pond, you’ll need to occasionally clean your backyard pond, especially if you have koi fish. Test the water twice a week to make sure your fish have everything they need and always remove visible debris.

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.

The Casselton, ND 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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