There have been murders in my tank!

[moldrik]

Ok, it's not a matter of the tank being clean or not.

I came into work today and the lights were off. I noticed another snail, upside down looking dead.

I turned on the lights after saying "what the f....??". Something darted off in a direction, way too quick for me to notice what it was. I'm thinking some sort of worm??

If anyone has any suggestions, let me know. I need to figure out what the hell is killing my snails.