i get this from tractor supply and is fine for my month old chicks but my 8 week old pullets have stopped growing. I wouldn't have noticed had I not gone to friends house that had the pullets siblings and they are noticably larger than mine. I asked what their feeding and his are on a grower mine are still on the chick starter/grower. Went to tractor supply where I got it and they only have 10lb bags. And don't have a 40lb bag. Ang suggestions for a larger organic grower would be great.