I put a couple of YoYo loaches into my tank. I started finding empty and broken snail shells this morning. YoYo's like to eat snails as do most loaches. The clown loach is probably the king snail eater but gets pretty big.
I think im going to have to move either my dwarf chain loaches or skunk loaches in to my 57G to combat the increasing snail problem - its just getting out of control!