your fixer is toast

mix some fresh, take a clip of film, see how long it takes to clear in the fresh
then take a film clip and do the same thing the fix you have been using,
chances are it takes more than 2x the time the new fix takes ... ( means it it is spent )

formulary 130 is great stuff, you can use it for film too
dilute it 1:6 or 1:10 and process for about 6-7mins
( prints or film, use it warmish @72F for best results ! )

good luck !