i finally found a feed store that carries the Purina poultry food. They were out of the Layena for my two older girls, but i bought a big bag of the Start and Grow for my kids. First question, i noticed when i got home that the label says it's medicated. My kids were on a chick starter first couple months that was medicated. They have been on a grower mash that is not medicated for the past two months. Will it be a problem switching them back to a feed that is medicated? Next question, my understanding is that they should go onto the Layena when they begin laying, and the Purina site states this as 18 weeks. So do i just switch over when they are 18 weeks, or do i wait till i see an egg? They are silkies, so my understanding is they may not start laying till they are at least 6 months old. Thanks for any advice anyone might offer!