Is the fogging consistent across all negatives?
If it’s in the same place on all the negatives, but not related to the top or bottom of the developing tank, the fogging is due to exposure fogging which is happening in either the camera or the film canister. however, based on your other problem, lines running across, coming from the holes, i think that your problem has to do with agitation. Agitation is what you do to the developing tank during the developing process, turn, thump, thump, twist, twist, bang. How often do you do it? I’m guessing you’re not agitating at all. People do agitation differently, but the way that I used, based on the books I read, and finally settled on this method is: Lift the tank, turn it upside down, right side up, rapidly (an inversion) (renverser la creme renverser) Tap it on a solid surface, like the edge of the sink, once or twice (thump, thump) Twist the tank rapidly about 90 degrees and back, twice (twist, twist) The purpose of agitation is move the chemistry around, stir it up, so that it does not
