I did have the wood more up like that but the other end then twists up off the other rock in the middle which doesnt quite look rightLooking really cool 2 things I'd think about - first can you turn the big bit of wood a bit so the branch pointing towards the back points up, it looks like it would break the surface which would look good. Second can you make all the rocks so the lines in them point in the same direction, it looks like most of them go horizontal but just a few that go diagonal or vertical that stand out. If you put them all in the same direction you get the effect that its a real river and the grooves and lines have been formed by years of water rushing in the same direction.
Wills
Good idea with the rock. I raised the left hand side of the tank up so it looked like a stream flowing down hill. Think that will help set the flow better.
Thanks will