Can anyone help me in getting rid of this green stuff? We have had this pond on our property for almost 16 years and have never had this problem. We do not have electric hook up there because it is in the back of our property. We have not put any fish in the pond only what naturally ends up in the pond. There are so many algaecides out there I don't know which one to use and if they would even work. Any advise would be appreciated. Thanks!