Rule number one when building a pond, make it as large as you can afford and stock accordingly.

It's best to consider the size of the pond you can build before even thinking about how many or what kind of fish you want to put in it. It's not the size of the fish but the size of the pond that is important.

In your area, you're going to want to make it no less than 4 feet deep and 6 feet would be even better. As far as how many gallons, the biggest mistake and most common one made is overstocking. You'll find recommendations like 10 gallons per fish or something like that. Don't even consider koi if you can't maintain at least 100 gallons per fish. That's a minimum. Koi (and goldfish) need a lot of space and excellent filtration in order to maintain their health.

Do lots of research, read and converse with serious and experienced fish keepers.

Good luck!
Dark Lotus

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