How much developer to use when developing one role of 35mm film in a Patterson two-tank system? - Darkroom - Leica Forum

Brush Development The Online Darkroom

I want the bigger tank so I can develop multiple rolls at once. Do I have to add double the amount of all my chemicals since it's a bigger tank, or can

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Dumb question but how much developer do I add for two rolls? : r/AnalogCommunity

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Darkroom Film Processing Rotation Processor Machine Automatic for Jobo – eTone - Professional Photo Accessories

Saving chemical costs: Develop films in drum with hand rolling - Darkroom - Leica Forum

Using a two-reel developing tank to process one roll of film. Should I fill it up with the developer or use enough for one reel? : r/Darkroom