Originally Posted by MattKing
The fixer used with X-ray film would work fine for photographic film, once you adjusted the dilution.
Sodium thiosulfate (formerly known as sodium hyposulfate or hypo for short) is the traditional fixer, so if you can find it in bulk that will work well.
It used to be used in some swimming pools.
Anything more benign? Like the caffenol stuff?
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