Sorry to hear this. It sounds like they are quite a bit sick. This is why quarantine is very important. I will always preach QT, because I do believe it is very important when dealing with rodents, just as much, if not MORE important than snakes.
Also, Kaytee brand is pretty much over priced crap. Mazuri also sells small bags of their lab blocks at pet stores like Petsmart and Petco.