I probably should have checked this out earlier, but I'm just playing around, and the film's nothing critical. I have seen some nice results with color film and Rodinal, so I decided to try. I have some cheap expired Fuji 800 which I exposed at 400, and it's sitting in developer now. I do 90-minute stands most often with my B/W, so I figured I'd try that for starters. So in about an hour, I'll need to fix it. All I have is Clayton RF-19 Rapid Fixer. I just put a test strip of the film in this fixer and it doesn't seem to do anything! The fixer is fresh, and I gave it about 4 minutes and still couldn't see it clearing. What are my options here? Thanks!