I use Agfa Sistan in distilled water. I have a liter made up and use it over and over for about 20 films - then make another liter. Lasts for ages.
It does the same as LFN in the final wash except it has a couple of added bonuses (the second of which helps a lot here in Florida).
1. It converts the silver in the emulsion to a more stable form making the negatives more archival. (A claim by AGFA)
2. It is anti fungal and so stops the rather nasty stuff eating away at your emulsion in years to come - something I have unfortunately experienced with some of my older negs here in this hot humid climate.
I understand that AGFA has started making it again - at least the DigitalTruth website is advertising it. Highly recommended.
For roll film I always used tap water and a photo chamois; it removes every drop, and they last forever. Though, holding sheet film at both ends would be more difficult when using this method. You would need to hold the chamois with both hands to cover the width of the film.
"Pictures are not incidental frills to a text; they are essences of our distinctive way of knowing." Stephen J. Gould
Boy, less wine or more cognition. Potassium thiocyanate, of course, is not fixer. Fixers are of the thiosulfate family. Couldn't find much about PT except it's a component of artifical blood in theater productions!
I've got a water cooler filled with distilled, and I find it works much better, as I thought it should. It's some of the best $7.50 Canadian a man could buy.
I also have photoflo, but it can leave a bit of scum on the negs. It works better than nothing, because I have extremely hard water, but I see no point in adding it to distilled water. Why add a surfactant to nothing?
(complete lack of dissolved ionic solids in distilled water)