Here is a link to some information on coccidiosis,
http://www.worldpoultry.net/diseases/coccidiosis-d63.html
For Cocci I like Di-Methox Sulfadimthoxine
http://www.twincitypoultrysupplies.com/store/index.php?main_page=product_info&cPath=2&products_id=492
Note dont use the Di-Methox if you are...