Yes, the ceriths do seem to die, but you'll get a year or 2out of them. My nerites are just staying to die off after a couple of years. The astraea and trochus seem pretty hardy.great advice
but how did you leave out the bulldozer of cuc, the mexican turbo snail
And only thing i find in mt tank is nerite and cerith die over time. i started with 25 each and i dont see any in my tank 3 years ago might have a few
did you notice this
yes it could be my hermits
seen a few walking around in shells