1-2 minutes in 2% plain sodium thiosulfate is more than enough. One good remedy for bleaching in fixer is to tone the print in gold, platinum or palladium. (Before fixing!) That way, you'll get very stable and beatiful prints. Plain vandykes aren't much archival, or, lets say they are much more vulnerable to attacks from the environment. A nice, good working, long lasting and relatively cheap toner would be gold-thiourea toner; it tones the print with both gold and sulfide. It will give you a darker and much more (very!) stable print.
P.S. Refresh the fixer after 3 prints to be on the safe side, or do double bath fixing and refresh after 5-6 prints.
P.S.2. Vandyke drydown is immense, totally blown highlighs (seemingly) will gain considerable density and show detail when dry...
Last edited by Loris Medici; 07-12-2009 at 08:56 AM. Click to view previous post history.
Reason: Added a comment about refreshing the fixer.