Oh yeah, I was advised by several people incl. Bang Guy to remove it. I banished ours to the 10g to see what will happen with it. Its been there for 4-6 months and I havent seen it bother any snails yet, but that doesnt mean it wont. Good luck finding it again if you havent isolated it yet, took me a few days before I located ours again. As you can see it already had coralline on the shell and blended in very well. Good luck in your decision.
mine is easy to spot.. although i cant find him atm.. but he comes out in the open alot.. ill wait for a for sure id from kip or bang.. and remove him if needed
looks a little like a ceritbium (cerith), herbivorous,detritvore, feeds on diatoms,cyanobacteria. there useful in your reef, but hermit crabs attack them and kill them
well then i made up my mind... next time i see him hes going to know what its like in our septic tank lol hate to kill it, but its better than it killing my stuff that i payed for. goodbye little welk!