Help with a sick chick.

[1chicken fan]

I found a bloody stool today it looks as it it is Cocci and I bought the Corid put it in the water as directed and also treated the one bird who has been small and sick off and on and the one with the bloody stool, I slowly opened their beaks and they took it no problem. The smaller one is less puffy already and eating and pecking around the other one is is up and around but still laying down, but I think I caught it in time. Thank you all very much!!!!! You have all been so much help