I went out to clean my 4-5 week old baby chicks cage. One of the barred rocks pooed right before I picked it up and it looked blood tinged. I have been watching them all day and they seem fine all are eating and drinking. Should I start Sulmet now or wait? Also, I have a cage of 2 weekers and all seem fine, but should I give them some just in case or wait to see if they become ill? Will it hurt to give it to them if they don't have it? Also I have a dosing question. I water them daily and they drink out of a 1 quart waterer. Should I mix up a whole gallon or should I just mix up a half gallon (which would be 1 tblspoon of solution) so it will be made fresh every day? Thanks for all your advice, I truly appreciate it.