Moving specks

[mtnmonster]

So I pay really close attention to my tank probably closer than I should. I've noticed all kinds of different and weird stuff. Now I've spotted these little dark specks and they're moving all over this rock. I don't see them anywhere else. I have a couple bladder snails are they newly hatched snails? This is the best picture I could get. They're just under 1mm long  and move kind of quickly 

[Colu]

Their more than likely baby snails it's difficult to tell off your pictures