I've got to admit... I am definitely no biologist. Are snails already born with shells? To help with the algae, I got two turbo snails from LFS about 3 months ago. Up to this point, I have not seen any snails in the tank for as far as I can remember. Soon enough, I started seeing some baby snails here and there, all with their own shells! Each one's probably 1/8 of an inch in diameter. Now 3 months later, I just did a rough counting, and I see well over 20.. probably more considering that I've only counted ones on the glass and the equipments. Did these guys come from the two turbo snails? I heard that it was pretty tough to breed these guys.