Hello, ok can I mix these 2 meds together in the drinking water for my chickens? Or Duramycin with Sulmet? I have a few that have systems of Respitory colds, and i suspect cocci as well. And I want to treat the whole flock at the same time. I know about mixing other meds is ok, But i am not sure on these 2. Thanks in advance . If so how much of each of which ones?