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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.

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.

One reason you may want to fill in your pond is the cost of maintenance. Pond cleaning may cost about $1,000 for an annual cleanup, or monthly visits may cost $75 to $100 per visit. If you don’t want to spend that much per year on pond upkeep, you may consider filling in your pond.

DIY kits exist, but professional installation ensures proper filtration, landscaping, and leak-proof construction.