Two pullets, 19 weeks old. Got them a week ago. Day 2 they started sneezing and have yucky runny noses. I did a good coop clean out, so I figured they were just stressed. My ducks are in a seperate coop. they can see each other buy i wont put thm together yet. (quarantine) I asked the breeder if any others of his birds are sick he said no. The vetrx helped a little but they are still sneezing and icky nosed. just a little yellowish snot in their nostrils. but they also breathe through their mouth some of time i think thats not good, right? These are my first chickens , Ive had ducks for seven years and geese for 2 years but not chickens until now. anyway theyre very sweet and lovely I want them to be healthy. Im feeding 20% protein all flock. by nature wise.and some little bits of veggies for treats. Should I use erythromycin?? Its labeled that its for fish but I read an article saying it can help poultry with respiratory infections. I also added ACV with garlic and ginger in their water twice so far. and I also gave some Nutridrench water a couple times this week too. alongside plain water too.