I know this is a simple question, but i'm curious what causes fogging on paper. I was wondering if maybe the dark light was too bright, but i turned it down and it was still there. I stopped the enlarger lens down to around F8 or F11 and it seemed to reduce it a little bit, do you think that stopping the lens down would reduce fogging on the pirints? If you need any more information to try and figure this out let me know. Thanks a lot for your help, i've only been into the darkroom for a couple years, and i really want to start getting some good prints, and you guys are always really helpful.