Hey Alan, I believe you but find it odd at they same time, as I have had good results with it and so have others I know that use it. I even did colorimeter tests before and after and the colorimeter proved that the product worked in one of my tanks, and a friends tank. I use it in freshwater tanks and ponds as well and it has worked great... I know alot of products can work great for some and seemingly do nothing for others so I respect your statement Alan, but I think it was rude of EmilyB to comment the way she did on a product she has never used. Mabey I just need to take more "Happy" pills....