I googled for a while, and found this :
http://www.versalab.com/server/photo.../vestlrevw.htm
I happen to have one of the versalab washers, and he says run it 1/2gpm for an hour and let the prints sit in it for a few hours and run it again for an hour. this will use 60 gallons of water, not counting the 11 gallons to fill the washer.
sounds like I had the solution all along, just need to lower the flow to 1/2gpm.