I have 4 chicks and one has had diarrhea for about a week. It seemed to improve for a couple of days, but today it looks like tan soup and stinks worse. I can't seem to identify which one it's coming from either. I have been alternating plain water and electrolyte mixed. Any ideas. No one has ruffled feathers or is acting strange or lethargic. Chicks are about 4-5 weeks old.