I have been following all the advise from my feed store, (now I know a no no since I found BYC). I started my 1 week old chicks on; KRUSE'S CHICK STARTER MASH As an aid in prevention of coccidiosis where immunity to coccidiosis is not desired. ACTIVE DRUG INGREDIENT Amprolium .........................................0.0125% They said as long as they are eating a mash that they don't need grit, and looked at me like I was crazy when I said oyster shells. So now my pullets are 18 weeks old and that's all they eat, Kruse's starter mash and water. I looked at the different Brands of chicken food, and most had really weird ingredients, besides the organic ones. I only want to do what's best for my girls... Should I change to the organic food? Starter or Layer? Mash or crumbles? Do I need grit and calcium? Should I be adding some sort of electrolytes or vitamins to their water? Is there anything else they should be getting "standard" in their feed, such as BOSS? I searched a bit here on the boards but didn't see too much regarding these super basic questions... Thanks in advance!