Hello everyone...so getting nervous about some eggs I'm tumbling. These are yellow lab eggs. At first it seemed all were the same. Now I'm noticing some developing a "fuzz" on them some changing color to a more pale white than others some have floated yo the top of the egg tumbler completely (assuming they are dead eggs) and one is even growing a second egg...what the heck is going? Am I doing something wrong or is this how it normally is?