Found an empty snail shell. This scares me into thinking I still have a polyclad flatworm. Here's wishing I had started my tank with dead rock....Anymore dead snails and I may have to.
Yes, and I bought plenty of empty shells for them (almost all have already upgraded, lol). This was a little snail, so I guess it's possible it was a hermit. I'm doing random flashlight checks throughout the night.