you can check them all, but i say you first get a plan of action going..find a friend with a stable tank to move some stuff over or as tough as it may be..start fragging stuff before it's all completely gone. Having gone through this myself a few months ago, i know it can all turn white real quick. Fragging was my only option and I was able to manage to save a few colonies albeit now in smaller frags that I passed out to a few friends.