I have no clue as to where these plants came from. I am setting up a 10g. All it has in it is water rocks and an ugf. About a week ago plants started growing in it! They look like a blade of grass with 3 little flowers on the top. They grow at about a rate of 2 in a day!! I have no clue as to what they are or where they come from! Please help! thanz, Jason