Hello. I just recently got into film shooting. Im from a small town and nobody I know shoots film or ever has before except for the grouchy owner of the local photo shop. I went for bw film in a canon ae1 since I already had lenses for the fd system. I shot my first 2 rolls of film (illford hp4 iso 400 and trix400 pushed to 1600) and went to develop them tonight. I just finished mixing my xtol and diluting my stop bath and fixer all from kodak. I majorly screwed up the development on the hp5 (loaded the reel wrong) but when I went to develop the roll of trix400 it came out totally blank! I used xtol 1:1 and followed kodaks recommended 12 minute development time for film pushed to 1600. I am absolutely positive that my shutter works, I didn't accidentally use fixer first, amd my developer should have been 20 degrees c. It has me really confused and im wondering what it could be? Surely the developer couldnt have died within an hour of mixing it? I put it in 5 1 liter pet bottles. Really hope some more experienced individuals can help me out with this. If I left out any important info let me know. I did this all in a dark room lit only by a safety light. Maybe I left the fixer in too long?