after treating my 3 yr old chicken for what I thought was worms over the course of 7 weeks, the Vet says it sounded like coccidiosis. I bought Corid liquid, but then I saw a post about using Amprol 128 powder. I only have two chickens. One has runny poo the other one is fine. The Vet said I could treat both. Which one is best and how do I dilute it? Say for one gallon of water?