So we have two Pekin ducklings we are brooding with 4 Easter Egger chicks. All are eating chick crumbles formulated for chickens. My understanding is that the ducklings need more niacin - no problem, we can supplement in water as people have suggested. I am curious though if this would hurt the chicks or not if I included it in the water for the little flock. I don't want the ducklings to suffer or the chicks and would like to keep them all together as long as possible. Suggestions?