I am so sad. So, still have 2 clutches from the 15th floating in a container on paper-towels and was just checking out my tank and noticed a new clutch. I was so excited. I got my container to add it to, went to pull it off the side of the tank, and I destroyed it. Do these take time to set up or something? It was not slightly crunchy like the others were when I removed them from side of tank. It was like pure white, not rose/pinky in color the other 2 were. It was not there when I went to bed at around 10:30 am and was there when I woke up around 5 pm, so were probably really freshly laid. Do I leave them a bit to harden up some before removing them to float? I am really sad I murdered them, heartbroken. I could not save it. It was stuck all over my fingers and fell into the tank. These were mystery snails in case anybody was wondering. So afraid if I leave them on the side of the tank, other snails cruising around will knock them into the water. Whoever is laying these, seems to prefer the left-hand side corner of the tank.