I love to answer my own questions. Maybe I'll find some support.(posted 8511 days ago)Kodak rec's 1 to 5 rolls per litre. That's 200ml a roll minimum developer. Apparently this is supported in other threads, although I have read one where someone was using 4oz, about 120ml, and getting good results. I'd like to go 1:2, but alas the Jobo is too small without the extension; A soon to be resolved problem. This may be a good thing to remember for others coming into developing. Get a good sized tank. Maybe someone can confirm Kodaks dev times for 68F?