How to build a koi pond part 2

After I put on a water fall to my fish pond.
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Please watch my other Koi pond videos:
How to build a Koi pond-
• How to build a Koi pond
How to build a Koi pond part 2-
• How to build a koi pon...
My koi pond summer update part 3-
• My Koi pond summer upd...
New Koi carp in my pond part 4-
• New koi carp in my pon...