How do you add current into a pond?
im tired of seeing my koi's not swimming. they're becoming couch potato and they're growing bellies. so is there anyway i can add current into my pond so it can get them swimming and gain muscle?
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Have a motor running and some vent that pushes a steady current
Powerhead, strong pump, might also consider adding a nice fountain to the pond.
Powerhead would work
Most ponds should have some current because of the filter...do you have one? Koi's need a very strong filter, you should test your water parameters because when fish get lethagic and bloated it usually means poor water quality.
Change the wader?
O_O