when the chicks are young like days to 6 weeks old they get chick grit with their chick starter. then I can switch their feed to 25% and they can have scratch grit? This is what I am feeding now: 20% chick starter--not grit but planning to get some. I have 3 weeks old chicks S/R don't know sex and 3 day old chicks pullets. I also am giving them just plain tap water. How will I keep the babies from eating what the older ones are when i combine my flock? I am totally confused!!!!