I have 2 chicks about 9 weeks old. They are in a large brooder in my basement. All of the older chicks have moved outside to the chicken tractor, but these 2 are younger and they get picked on and run off the feed. So, I still keep them inside except for a few hours in the afternoon when I put them in the tractor with the others. My plan is a slow acclimation until everyone moves into the new big coop in about a week or so. Anyway, I just noticed today that there is bloody stool in the brooder. They both seem to be acting fine. Not lethargic... seem to be eating. I'm working from the assumption that this is cocci. I've never dealt with cocci, but I've had Corid on hand since I hatch my first chicks 3 months ago. Unless someone advises otherwise, I want to treat for cocci and see if that clears the problem. 1) Should I treat the 2 in the brooder and the ones in the tractor also? They've been in contact, but they're older and I haven't seen any signs. 2) As far as the Corid... is it 1-2 Tablespoons per gallon for 5 days? 3) Then feed a probiotic mash with starter, milk, yogurt, and vitamin E? 4) How long do you feed the mash until the gut flora is built back up? If anyone can verify these amounts/times I would really appreciate it. Also, if anyone has any other thoughts on the cause of the bloody stool, I would like to hear that too. Thank you! Thank you!