I only had my ducks for 9wks and I kept them in my backyard with no body of water just a kiddie pool. So I don't know. Perhaps some in the duck forum could answer that question.
My daughter has 2 nine week old Pekin ducks to rehome to someone who won't eat them. One is a girl, still unsure about the 2nd one but I think it's a drake. We are in the South Florida area. Need help asap. Thanks