This past weekend I upgraded from a 75 gallon to a 120 gallon tank. In the process of moving everything over discovered I had some good things and bad things. Got a few frags I'm most likely gonna place for sale but more importantly I came across a snail I remember buying at an establishment here in VA ( Dont ask I will not disclose). Some time back I purchased what I thought were 15 or so nassarius snails, but one of them was really huge and had a different pattern on its shell and the salesman and I thought maybe he was just a good eater since it had the trunk like the other just a shell looking a bit differnet then the rest. Thinking nothing of it I threw it in the 75g tank. I even placed a queen conch in the 75g tank and have had no problems, but I did notice after making the new transfer to a larger 120g tank I only had about 10 large nassarius snails from the 30 or so I have purchased in the past and I saw no signs of the babies they were once roaming around. My thing is after seeing that snail last week and picking it up I did a quick examination and then threw him in the new tank not realizing the snail could have killed me with one sting. I did some research and realized I have what believe is a cone snail in my tank.
My question is how would I get him out of the tank with out literally breaking the tank down? O r should I just leave him alone since it has never caused any threat to the fish in the tank?