Hi, thanks! that's good to hear, the eggs are chalking, but the first two eggs started to have in, is it not humid enough? this is my first time incubating turtle eggs, I have done bearded dragon and bird eggs before, but never turtlesEggs laid in the water can certainly be fertile. With most aquatics, best research shows it is the exposure to oxygen that stimulates the ending of enbryonic arrest and the beginning of incubation. That's how turtles and tortoises are able to carry eggs ready to lay for weeks looking to find a suitable time and place to lay.
Incubate the eggs you find in the water. There is a very good chance they can hatch if fertile. You should normally start seeing chalking starting within a few days to a week of the start of incubation.