I have a question.... we have a flock, 1 is 2 years old, 4 are 1 year and 2 are about 21 weeks. We noticed a big bout of diarrhea about 2 weeks ago and a couple of the hens were really lethargic with 1 not coming for the worms or treats. We did some research and figured it was an outbreak of coccidiosis. We called a Mennonite family in our area who raise chickens and were recommended by the feed store in our area. They said to put them on Oxytetracyclin Hydrochloride soluible powder. We called the manufacturer to get the dosing info. We refreshed every day and kept them on it for 10 days. They all seemed much better, we discontinued 10 days ago and now we have a hen who is displaying the same symptoms again. Very frustrated, should we try and get the Corid? We cleaned everything really well. Stools had all gone back to normal. Now the one who is displaying symptoms has watery yellowish stools. At my wits end.