Hello I have about a 4.5 in. maxima, which seems to be doing very well. But as of the past week I have noticed small white thin snails (about 1/16in. to 3/16in) on the edges of the clam. Today I took the clam out and brushed the snails off into the sink. Don't know if I should worry about these snails or not. I heard from somewhere their is a snail that will burrow into the clams and eventually kill them . Not knowing if these are them I thought I would post and get some help. 8)