I found a snail in my aquarium and now I am afraid that I might get an outbreak! I am pretty sure it is a ramshorn snail. It is very small-- smaller than the cap of a Bic pen. I pulled it out of the tank, but I don't want to kill it. What can I do with it, and how likely is it that I will get an outbreak. I can't see any eggs anywhere and I put the plant in 1 week ago (he hitched a ride on that).