Thanks for the link Bryan, it explains things quite nicely. The only thing is that I do quite a bit of medium format, and I found his answers regarding developer volume for that slightly vague, anybody with experience on this?
Then there are the inversions starting the process, he says to begin with 10 inversions; are they successive? Because in one of the picture texts he says he started with one inversion per minute for the first 10 minutes. Slightly confusing, or maybe it doesn't matter?
I have to admit that my gut reaction when I read the name Rodinal was: Large GRAIN. Maybe this is different with stand development, what are your experiences? I noticed that he says that the colder the mix the finer the grain.
By the way I just checked my tank, it is meant to hold two 35mm reels. But when I poured 707ml of water into it, it flowed over the top. He does in fact mention the exact tank that I have and says that it will be ok with two 35mm films, so I guess there is a bit of leeway here. I expect I will have to do some experimenting, and anyway a new tank is not all that expensive unless you go for the stainless variety.