3 ducks: Size of feeder and waterer?

[only4cake]

okay so i'm going to be having 3 ducks, 2 pekin, and one khaki campbell. so i'm wondering how big should my feeders and wateres be for them?

i'm thinking about buying and 11lbs feeder and 3 gallon waterer,

Is that too much or to little?

 

[Wifezilla]

Ducks dirty water REALLY quickly. I use a 3 gallon for 6 ducks and change it when I come home for lunch. It is always gross...LOL