Selenium toning & Hypo Clear | Photrio Photography …
Aug 5, 2012. #1. I have always been under the (perhaps mistaken) impression that you must wash your prints before selenium toning, because residual fix will cause prints to stain in selenium. For many years, I have used the following procedure: fix, hypo clear, wash in trays with five or six "soaks" in fresh water, each soak about ten minutes ...