yes there may have been traces of bleach and/or fixer in the sink. From foam generated by the agitation and that got into the water after I removed the lid.... The water has no chlore at all.
I have already forgot tanks in soaking while I was doing something else, but never more than half hour, and never had a problem..
some frames I did spend time composing because the place was uneasy (on top of unfenced fortress wall, trying to not fall to my death), but otherwise no important pictures, as I was just playing with my Moskva-5 and a 2018 roll of Fuji 160NS, metered at 320. The recently discontinued Fuji 160
Only one frame was almost ok:
others could be salvaged partially. By selecting an unaffected area, otherwise the scanner (V700) was confused.
for instance, full frame scan positive:
but with a cut:
then bigger cut with only a little bit of affected area top corner (it was getting dark, hence the light cast by the lamp in the middle on the ground to the right):
or this full frame:
when cut:
so all in all an "interesting" experiment. Well it had better happened with a roll of Lomography-400 than a Fuji 160NS.
I did check Fuji specs of the 160NS roll base, it's cellulose triacetate (sheet is polyester), no idea if this plays a role..