Happy Easter to you too.
I hope your chicks get better. Please take the time to check and make sure they are not overheating.
Give them cool fresh water frequently and see that they are eating well.
Can you please post some photos of the chicks, their poop and how you are keeping them?
Photo of the feed bag you have would be good too.
You put in new water and they all ran over and drank - have they been eating/drinking?