My 5 month old gold laced wyandotte has a cold. She is sneezing a lot, and has some snot at her nostrils. I bought some oxytetracycline at the feed store by me. I hope the picture is here that I attached. Could someone please help me. I have a one gallon water feeder and need to know how much to add to the water. Also is it ok to let my other five chickens drink if they don't need it?