dandeIO, after reading your explanation and studying your picture further, some mysteries are explained to me. The biggest one is the very dark reflection of the rocks at the top of the image. I had a difficult time understanding how you would get a mirror like reflection AND transparency in the same render, as that is not natural. Typically, a dark reflection allow one to see through the water, but if you are rendering a TG2 pass w/out transparency, then you would get only the reflection.

Thanks for clearing that up. It was a real 'sticking point' for me trying to recreate the render.

Thanks again. Chipp