ok..here is my story. working for Hagen as a summer student I got myself a nice price for an aquarium so I bought it, installed, bought a couple of fish, gravel and a piece of wood (african I think). All my tank now is full of snails. I don't know how come. They appeared a few weeks after the setup, and now (3 months later) all my fish are dead. I saw them eating the "baby snails" and they are dying after. My plants are dead too, the snails took great care of them.They are groce and so many. I bought chemicals, (3 fish in a shot died than) but not a single snail. I got out all the water, cleaned everything (got at least 30 snails in the filter) ... for nothing: 1 week later they have appeared again. I think I'm going crazy, I relly don't know what to do. My tank is so beautiful (was) and I don't want to sell it or something like this. Any ideas on how to get rid of the snails, and why i got so many?