Quote Originally Posted by CBG View Post
Forgive me but I need to digress to answer your query.

Since washing photographic materials works by diffusion of the "bad" stuff outward from and area of high concentration, the film or print, to an area of low concentration, the wash water, and since the speed of the migration of the fixation products is determined by the relative concentrations of byproducts in the emulsion and the wash water, I've been convinced that the strongest washing is accomplished by total changes of water. In other words, the most effective wash method is by fill and dump since you reduce the concentration of fixation byproducts in the washing environment radically every time you dump and refill.

Yes, that's the processbut for me,the easiest way to keepthe concentration from getting into equilibriumis a constant low flowof fresh water;not the least amount of waterbutthe fastest wash.