I recently bought chickens from an auction, its been about a month now and I have a very tiny small frizzle hen that has clear discharge coming from her nose and is sometimes sneezing, she eats and drinks fine has quite an appetite. I have her inside away from my other 5 chickens ive only been giving her oxytetracycline hci soluble powder in her water a man told me to put a teaspoon for small liter waterer, am I doing the right thing??? I need help there are no vets that accept chickens where I live!