All great advice so far, I'm glad that there is a water test. My dad keeps telling me to candle them and I keep telling him there's no use because they are brown and opaque and then he accused me of not knowing what candling was. Suffice it to say, it's fun arguing with my dad.
To answer one post, we have 8 chickens. And believe me we thought 10 eggs at one time was a lot too, but we honestly just figured it was similar to women who spend too much time around each other and their menses synch up. You know we figured one laid an egg and the others all started to pop them out as well.
And our 24 hour guess is iffy at best. The two smaller speckled eggs could have easily been missed in a nest check, and since we weren't expecting them to even start laying in a couple more weeks we could have missed some others as well.
Anyway, thank you guys for the information. I'm gonna go check to see if I have any floaters now.