there is a small chamber in the farm what looks like the queens part and there is something white down there that looks like brood but you can see its not and is biger than the worker ants and there treating it as brood does anyone know what it is ?
Why are you sure, that it's not brood? Maybe it is a nacked pupa? Try to compare it with the picture from this LINK. If it's not a pupa. Are you sure, it's something living? Or could it be a kind of waste or something like that? What about a photo?