Well. I have read all the posts on here about people talking about doing it. Havent seen one running yet though. Got a helluva deal on a damaged now repaired fiber glass pool liner. Its 14ft x33ft long and 3 to 6ft deep. Im running all 3" piping for the big aquabead 9.3 and a low rpm 1hp artesian. My plan will be to run a solid 10,000 gallons per hour threw the stream. My question is...will the koi all point the same direction constantly? How will they act with the heavy water flow? And will the point under the current bE a safe enough place for them to rest? Last thing i want is all the fish sucked to the bottom and mid drains. Thanks for the input.