Quoted By:
Stand development with no agitation can lead to this effect known as bromide streaking.
This was HP5 in Blazinol 1:100 for 1 hour.
"The developer near the heavily exposed areas of the film becomes exhausted in the process of reducing silver salts to silver. Bromide ions are also produced in this process, and being heavier than the developer, they drag downward across the surface fo the film, inhibiting development in those areas and leaving streaks of uneven development, called "bromide drag" aka bromide streaking. Agitation during development brings fresh developer to all areas of the film and flushes away the bromide by turbulence within the developer."
