I'm very confused about the dosage for Corid (9.6% amprolium). I have several sick birds and need to know how much to give them urgently. My vet said 2 cc/gallon of water. I treated them with this dosage a couple of times and I'm not convinced it was enough (they're either still sick or sick again a few months later). I've seen references on this site to about 10 cc/gal but one post said that's the dosage for cattle and for chickens it's 4 cc/gal. Please help! Thanks!