I figured that as well; rapid oxidation. The other possibility is less exposure of the film to the developer as most of the time, the film is not in contact with the layer of developer at the bottom of the drum.
200 ml is really minimal for 810. I am a believer in a little too much is better than a little shy. That assures that regardless of subject matter I do not exhaust the developer.
Correction, that should be 2750mil of water to 20ml Ro9
I wont pass that on, she suffers from low self esteem.
Here is a recent image shot on the Carestream single sided stuff. I had my meter set at ISO 25 ( for my Efke 25). I developed it in Rodinal 1:100 for 11 minutes. I develop all of my 8x10 in one gallon tanks. The print is a carbon print and the cell phone shot is of the wet print.
here's something else I'm trying, the biggest probs with mottling and streaking seems to be the film sitting on the bottom of the tray, I cut off the hanger on one of my old stand drop holders. It now keeps the reverse side off the bottom of the tray avoiding scratches and spent developer remaining stationary under the film. A lot easier to flip in the tray and move into the other soups.
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