Hot spring runoff with algae I

I tried several similar rotations and none seemed to make the

picture "horizontal" (something was always askew).

Also, are my photos coming out too dark? They are supposed

to be Gamma 2.2 and sRGB for web display.

Thanks!

Excellent shot. Almost like a painting (and I mean that in a good way).

I don't see any obvious flaws, so I can't really critique it. Did you try and take some shots concentrating only on the greens and blue?