Hi! I've always used Kodak acetic stop with indicator and never once in my life had i seen it lose strength, i always discarded way before that happened. But ever since i started using HC-110 a couple of weeks ago, it seems to change color very, very quickly. Granted i'm doing a lot more printing, but that doesn't justify how quickly its losing strength. Does HC-110 do this or am i just being paranoid? the bottle of concentrate is freshly opened (the stop one, the HC-110 has been opened but almost full for about 2 years). Also, i have noticed that now when i fix and wash the film the fixer and water seem to come out with a slight pinkish tinge to them. However when i re-pour the fixer out of the bottle next time it seems perfectly clear. WTF??? Could this also be because of the HC-110? or is it the anti-halation layer in the T-MAX (i thought that was supposed to be dissolved in the developer) i'm currently developing? any help appreciated!