I used Oriental Seagull RC Grade 2 in Agfa Neutol WA 1:7. You are correct in the fact that the development was N+. How much I do not know though since I have no densitometer. Also, the algae on the lake surface does go to paper base white at the spot slightly above the base of the tree. I don't have the print to refer to, as I'm at work, so I can't say for sure whether its the scan or is the same with the print and negative. I suspect that its the print as this roll was somewhat overdevelped, but I will check when I get home to be sure. Thanks for your interest.