We've always made our own chick starter by grinding and mixing some of our organically grown grains.
In equal parts we mix corn (and going around clockwise), barley, wheat, (red) millet and oats.
They get ground up to a fine consistency in our faithful, ol' Corona mill powered by Papa Pea.
We also mix in some kelp, about 1 teaspoon to every quart of ground grain.
This grain mixture, lots of fresh water, a little finely ground grit and an occasional hot fudge sundae (I'm KIDDING) and our chickies are happy little fuzz balls growin' like crazy.