My suggestion of leaving it ten minutes is so there is no doubt that whatever fix you are using, and however exhausted it is, the film 'should' have cleared by then. I was not suggesting that 10 minutes fixing time should be considered normal or that 10 minutes should become 20 minutes.
Originally Posted by pentaxuser
You don't have to stop agitating; fixing is to-completion and will proceed slightly (15%?) faster with continuous agitation. You can pause though if you're doing it manually and getting tired, it won't hurt anything either way.
Originally Posted by NolanGalbreath
Many of us use rotary processors for which agitation is continuous and mechanised, fixing and washing film is much less of a chore!