I have found countless posts converting 20% Corrid powder dosage into many sized water containers except quarts. I'm obviously no mathematician, can someone please tell me the correct powder dosage for a 1qt waterer? Chicks are 11 weeks old, one has bloody stool, all are puffed out, 2 will periodically open mouth breath, all 3 are still eating and drinking, all are lethargic and one is especially weak. Sounds like I need to do a 2 week run of corrid for Cocci, agree, disagree? Also, should I be giving them yogurt or anything else supplemental? From what I understand, the corrid water should be their only source of water. So I'm curious if I can add electrolytes/vitamins, or probiotics in with the corrid? Many thanks.