How long after mating do mystery snails lay eggs?

[KittenFishMom]

This is a snail breeding question, but hopefully this is right spot. The water is a bit higher than normal in my tank right now. I saw to snails mating. How soon will the eggs be produced? I don't have a lid on the tank, so the water will drop slowly. (I replace evaporated water with straight RO water) I'm wondering if I should bring it down sooner, or if the mom to be will wait until there is enough dry space for her eggs. I collect the egg clutches for a friend to hatch.

[Cmike15]

Even if you’re certain a mating happened it depends on the snails. Just aim to keep water parameters ok, feed them and wait. Once they want to they’ll start laying even on a tank lid if they don’t have room.