heh, i put in four more last night, wasn't sure if 1 of em burped, but put in the tank anyway.
All i have to say is i have an awesome clean up crew. Almost immediately the nassarius snails swarmed on that clam that i couldnt tell burped. This morning, the clam is completely clean. It must not have been alive.
Two of the others are buried. one more is just sitting there, i'm wondering if it too will become tank food.