I use a 2-bath fix for all my films. 4 minutes in 1st bath, 1 minute rinse, then 3 minutes in 2nd bath, 1 minute rinse, into HCA. After roughly 15 rolls through the first bath, I get rid of that, move bath 2>1, and mix up a new bath 2.
I've only ever processed 3 rolls of TMX, but haven't had any of the pink/purple neg issues so far.
allan |