Well the new chicks are getting their own brooder but the two brooders are next to each other. I'm not putting the new ones with the older ones
That sounds like a really good plan! Yeah I thought babies would be nice to each other a couple years ago and I put 1 week old chicks and newborns together and the newborns were almost completely blinded.Luckily they healed after awhile but that was very bad.