Lagoon safe for ducks?

[Duck123567]

Hi, so a few months ago I bought 4 ducks, there are 2 rouens, 1 pekin, and a buff orpington, well I was hoping to get atleast one male to fertilize a few eggs a year, but they all turned out to be females, so I was wondering if I got 2 drakes would they be alright to stay in the lagoon and then brought into the females pen when I wanted eggs fertilized, and then put back and the lagoon after?

 

[fatty and friends]

they will need a 100% predator proof pen, and the same amount of care as the females do.

 

[cheezenkwackers]

Get one drake. Two will fight over the females.