Are you in the US? Corid is Amprollium and can also be sold under Ampromed, in Canada it's called Amprol, and in the UK it's called Coxoid. Amprollium treats all 9 strains of cocci, but Sulmet, Sulfadimethoxine, SMZ-TMP will also treat the worst strains. I doubt that it is cocci this young, but I may be wrong.
Yes.Can I mix that into the vitamins I already added to their water?