What are you feeding?
Can you get some photos of the poop?
Any chance feed was moldy?
No lice/mites?
I agree, I would keep them on the Corid (Amprolium).
You are correct with your dosing.
I would be inclined to also give the sickest ones a direct oral drench of undiluted Corid at a rate of .10ml per pound of weight for 3 days in a row. This is in addition to them drinking the mixed Corid water. Do keep in mind that sick birds don't drink well, so you may need to syringe the mixed Corid water into them several times a day to get the meds into them and keep them hydrated.
Hopefully they will pull out of it. Keep us posted.
Best course of action it to not give any extra vitamins until treatment is over.
Can you get some photos of the poop?
Any chance feed was moldy?
No lice/mites?
I agree, I would keep them on the Corid (Amprolium).
You are correct with your dosing.
I would be inclined to also give the sickest ones a direct oral drench of undiluted Corid at a rate of .10ml per pound of weight for 3 days in a row. This is in addition to them drinking the mixed Corid water. Do keep in mind that sick birds don't drink well, so you may need to syringe the mixed Corid water into them several times a day to get the meds into them and keep them hydrated.
Hopefully they will pull out of it. Keep us posted.
Red Cell also contains B1 (Thiamine) it's not something I would give during the course of treatment with Corid since this is the extra vitamin you want to avoidDon't give any vitamins if they're on Corid as it nullifies both. Red Cell for equines is also something I give my chicks that are suffering Coccidiosis as it boosts their Iron levels and prevents deadly effects of anemia from the Coccidosis.
Best course of action it to not give any extra vitamins until treatment is over.