Hello, about a year ago I purchased 2 helix aspresa snails from here, since then they, and one of their very healthy children have passed. I am unsure why though. I feed them the right stuff, they have a proper enclosure setup, everything is safe for them to chew on, and their tank is large. They get misted multiple times a day too. I’m just wondering why a healthy snail, not even a year old, who was growing normally and was active just suddenly died? He’s in his shell, but his body looks dry, and he does have the typical covering over the opening of his shell that they normally have if they are too cold or too warm. I checked for mites but there’s no sign of any. Please help me, I don’t want anymore of my snails to die young. Thank you.