I just hung up my first roll of 120 Foma Pan 100 to dry. To my surprise the negs have a bright blue tint to them. I've seen slight pink tints on some of my other films (Pan F+ I believe) but not like this. Did I mess up the processing? I pre-soaked for a minute (the water poured out blue-green) Rodinal 1+100 for 7 minutes, two one minute rinses in plain water for stop, then 6 minutes in fresh TF-4 fix. Then a hour long soak for five minutes, dump, and refill for the wash. Negs look nice otherwise. What's really odd is that about a month ago, I shot a 135 roll of Arista Edu 100 which is supposed to be the same film, but it did not have the blue tint. I processes this roll the same as the 120 roll. Any idea or suggestions?