Hi and welcome to BYC I am glad you could join us you can't hurt them if they don't have worms and with he corid you didn't do it long enough anyways but it's not cocciolois what ever it is. But I don't know what it is but I know it's not that so I would go and get some electrolytes and go down to tractor supply and get some antibiotics for him and just do that for a few days and if he won't eat and drink try and force feed and drink him. O and can you tell if he can see or is he just gone blind? And when force drinking make sure that opening in the half of its mouth is closed when giving water or you will get water in its lungs and that isn't fun trying to treat.