Two weeks ago I started my pond, koi's I got from a friend in his large pond, 15 pieces, all is right with them, but I'm interested in a way of eating I mean when, as in the time of year because here in Croatia and everyone has a certain theory about diet , I now feed them every two days, I have two rotating food plus leaves for color and give them every ten days frozen insects (some flies something like that). Thanks a lot in advance