Exhausted fixer Ran into a bit of a problem with my fixer, I keep a log on the baths, one for the two bath for fiber prints and one for my RC work prints Using the old Kodak formula of 120 8x10prints per gallon capacity I used 60 8x10s per half gallon . which may or may not be completely wrong. I have been using Ilfords Rapid fix 1:4 when I stared getting some yellow stains on prints that I had done several weeks before. Which to me means exhausted fix, Yet the log showed I had not exceeded the 60 per half gallon and Edwals Hypo chex showed no signs of exhaustion I looked up Ilford data sheet and quite frankly cant figure out what their capacities are using the figures they give,.much less the replenishment rates I guess I am just too old fashion I think in terms of how many 8x10s per gallon. Also does Hypo Chex no longer respond to the new fixers?