Hello there,
This is my first post. I built a Koi pond at my rear yard. It's can hold 2500 gal water (exclude filter water).
I upload a video on Youtube, if you like my channel, please subscribe https://www.youtube.com/channel/UCfV...dpXTW7rLQFZxg/
Here is the video: https://youtu.be/fCFoYIHAowE
And the plan: