Folks, I have read a bunch of historical Apug postings, but I cant seem to find this answer. So it looks like Kodak has a "new" final rinse item, like the "old" stabilizer but w/o formalin called Kodak Flexicolor Final Rinse and Replenisher. This is used for new stocks. Then there is the traditional formalin (stabilizer) and (fungicide) that stops the fungus and others from eating the dyes since the silver has left, and that product is still in production called Kodak Flexicolor stabilizer III & Replenisher After reading a bunch, it seems that E-6 run slide film needs a stabilizer that contains fomrmalin due to needing stabilization and a fungicide. So my question is, if one does cross-processing of slide film in C-41 chemistry, what stabilizer would you use? I think I should use Kodak Flexicolor stabilizer III & Replenisher because if I use a new color negative film, it wont harm it and act as a fungicide and wetting agent, stabilization isn’t needed; but if I cross-process slide film in C-41 chems, then I need either E-6 stabilizer or I could use the Kodak Flexicolor stabilizer III & Replenisher because E-6 stabilizer and Kodak Flexicolor stabilizer III & Replenisher since both have formalin, which is needed. Therefore I only need 1 stabilizer if I only use C-41 chems for both slide and negative stock. Or since I cross-processed slide film in C-41, does it take on the inherent qualities of color negative and therefore not need a stabilizer (i.e. E-6 stabilizer w formalin) because in a chemical sense, it had become “color negative” film due to cross processing…I doubt it but who knows… I ask because I ran some RVP in my Rollei C-41 kit and wonder if the film was really stabilized or just rinsed and fungicide since the chems I use (Rollei) list only a fungicide as the active ingredient (Benzisothiazolin), I don’t see formalin. Thanks in advance for your thoughts, sorry if my question wasnt coherent and all over the place. PS my RVP processed in C-41 has some small gunk all over it, so that is why I was considering buying Kodak branded Final Rinse or Stabilizer III. I thought to myself…which one do I get…hence this question. I wonder if that gunk is from the fact that my Rollei stabilizer is a non-formalin based stabilizer and that gunk is un-stabilized particles?