Me too!! LOL! I am leaving an option open for an additional filter like this one:I am a absolute firm believer in over filtering.
But I want to see how the bog does first without it. And I’m only intending 3 koi to start, if it proves to do well then I’ll bump that up to 5.
My last pond was in full sun from sunrise to sunset, only maybe 200 gallons more than this will be, and I was able to stock and keep perfect water with about 18 - 7”-18” koi and one weird 10” black goldfish.
But, I really don’t want that many this time, just 3-5 large pretty butterfly koi.