Ok, so for the past several weeks, I have seen various mystery snails mating in my tanks. Mostly with the same partner, sometimes with another...I'm not judging LOL... BUT I keep the water line at the black plastic piece at the top of the tank, so not much room to go out of the water to lay any eggs. My question is, with all this mating going on, what happens to the females biologically if they decide that the water level is too high for them to go up and lay their eggs? Or will they simply find a spot they think is high enough above the water level and go ahead and lay (like on the glass over the bulb..or scary thought-outside of the tank)? My oldest tank has slightly more than 1" between the water level and the tank lid, my newer tank has 5/8" (wow, just had to measure and they don't make them like they used to, do they???). From what I've seen neither tank has enough headroom for the snails to lay their eggs. Will it harm them to mate all the time but not be able to lay any eggs? I wouldn't mind baby mystery snails, but don't have to have them for me. My concern is about the health of the snails...and what I might need to be aware of.