Baby turkeys seem sick, help please

[Leaguinea]

i bought 25 day olds, will be 2 weeks on Tuesday and they seem sick this morning.
They have been doing so well, eating and drinking and growing but this morning several of them seem lacklustre and just laying around sleeping runny, watery poop. Is this coccidiosis?
They are on medicated turkey starter.
Can they get sick on medicated feed?

 

[Fields Mountain Farm]

It could be cocci, if so the medicated feed won't help. You'll need corrid but I'm not sure if liquid or powder would be recommended or what dosage. I'll tag @casportpony she'll be able to help.
they get better!