Apug's own (Reinhold) posted this on his blog recently that high amounts of salt (300g/l) and time (2-3 days) will clear film:


Might have to try this out, I have a spare plastic reel/tank that might work. I wouldn't test with my nice Hewes as the idea of ss in water for days worries me. Also wonder if the emulsion might float off the base after such a long soak