Cerith snails

[Aquattro]

Doug, my ceriths always stayed near the edge of the sand bed, and hardly ever climbed the glass.
Now I had several hundred snails that looked like tiny ceriths last year, and those were in everything. I run floss in my overlfow and there would be dozens in there every time I cleaned it out. Maybe you have those? My real ceriths are about an inch long, while these others were half that or less.
As for astreas, they're the only snails I'll get now. Maybe 2 or 3 turbos, but primarily astrea.