I just got out of the darkroom after my first disaster in a while. I've botched up film development before, but have usually figured out what I did wrong. I've recently become a fan of sheet film development with Pyrocat and have used it as my standard developer for both HP5 and FP4. When developing roll film shot through my Holga, I always use D-76 because I always have, and get good results with all films. Today I was in a hurry and was out of stock D-76 and decided to use Pyrocat for the first time on 3 rolls of Ilford Delta 400, developer mixed 1:1:100 (15mlA:15mlB:1500ml H2O). Development time was 11.5 minutes, water stop bath, and after fixing I wound up with 3 rolls of nearly clear film (could make out a faint image on some of the frames). Am I missing something here? I picked the development time based on published data for Delta 400 with PMK, and figuring that Pyrocat chould be about 10% faster. I retraced all my steps but can't figure it out. I'll be checking out my camera obviously, but feel the problem is probably chemical or boneheadedness (hoping for the former).
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