Have any of you folks had Nassarius snail eggs hatch in your tank and the larvae actually survive and grow? I have seven Nassarius. The same seven have been happily living in my seahorse tank's sand bed for seven years. Every few weeks several of them climb up the glass or (their favorite place) onto a sponge covering my little circulation powerhead. There they have an orgy and lay gobs and gobs of eggs. I always leave the eggs undisturbed, but I have never seen them hatch. And I have never seen snail larvae crawling around my tank. Is an aquarium just generally too inhospitable an environment for snail reproduction? Not that I'm aiming to breed snails -- just curious!