It sounds like you have the temps adjusted now.
I'm sorry that your chick died. Sometimes when one has leg issues they fail to thrive.
The Wyandotte that is having problems now - is she pooping? Get some photos in natural lighting of her poop.
I'd continue to get her hydrated and see if she will eat some wet mushy feed.
Poultry Nutri-Drench like you have been giving is good stuff for a quick uptake. Give her 2-3 drops twice a day. I'd be inclined to get a bottle of human B-Complex and give to the ones that are not doing all that well. PND does not contain B2(Riboflavin) which is helpful leg health.
Hopefully things will turn around for you.
I'm sorry that your chick died. Sometimes when one has leg issues they fail to thrive.
The Wyandotte that is having problems now - is she pooping? Get some photos in natural lighting of her poop.
I'd continue to get her hydrated and see if she will eat some wet mushy feed.
Poultry Nutri-Drench like you have been giving is good stuff for a quick uptake. Give her 2-3 drops twice a day. I'd be inclined to get a bottle of human B-Complex and give to the ones that are not doing all that well. PND does not contain B2(Riboflavin) which is helpful leg health.
Hopefully things will turn around for you.