The addition of the EDTA solution to PMK that Gordon recommends eliminates the oxidation problem. Probably not that anyway, as the worst blotching I had was with MaxPyro. I think it has more to do with insufficient prewetting and some vagaries of agitation. The Expert tanks seem to take care of it for me.
Yes, from the ridges, or even the bumps on the old celluloid film holders for 2500 series tanks.
Ok - cool - thanks... Just trying to make sure we're all on the same page :)
I'll be up and running soon once the E6 excitement dies down and I'll report back the test results ...
Efke 11x14" and Arista Edu 200 8x10", PMK+EDTA, pre-wet tubes, occasional lateral agitation, increased amount of chems...
Base side streaks - cant be seen on either of the negs, but bang there they are in the prints
I'm back to trays at midnight until I can try some Pyrocat-HD
I develop my 8 x 20 negatives in a 16 x 20 drum, using Pyrocat-HD by hand. Machine rotation caused too many problems. My solution to perfect negatives every time (using some of Sandy's tips):
I have crafted/cut an acetate sleeve that is inserted into and covers all of the ribs in the drum.
I only develop one sheet of 8 x 20 at a time.
I use 2 liters of fresh developer per sheet.
Rotation is by hand and slow at 4-5 revolutions per minute, with reversal of direction and gentle tilting.