Today I came home to find my 1-1/2" maxima that I have only had for a week completely gutted. So far my 2" squamosa seems untouched!!! The list of possible critters in my tank include blue-leg hermits, scarlet hermits, turbo snails, a peppermint shrimp ( although I suspect this maybe a camel back), queen conch, 2 emerald crabs, and an ornamental brittle star ( legs about 8" each). I hadn't noticed anything bothering the clams except for a couple of hermits that seemed to be merely cleaning the shells. What should I be looking to move to "sumpland" ?