My ducks are about 10-12 weeks old. These are my first ducks so im new to all of this! I have been feeding them chick starter crumble and decreasing the protein % (as told from a family member) and adding brewers yeast until recently I have no been adding it. I'm curious whats the best inexpensive feed should I be giving them from now on and as adults. Anything I should be adding to the feed? They will not be free rangers.