So, this is the third time in maybe 15 years of printing that this has happened to me. I'd like it to be the last, so I'm seeking suggestions. My B&W prints, including the unexposed border, stain an extreme reddish brown after 1-2 minutes in dilute (1+19) selenium toner. My workflow is as follows: develop in Ethol LPD, followed by acetic acid stop bath, then 3 minute fix in Sprint non-hardening fixer. I then hold the prints in a large water bath until the end of my printing session, changing the bath occasionally. I then use fresh fixer for an additional 3 minutes and place the prints into the 1+19 Selenium direct from the fixer. I believe I got this from A.A.'s "The Print". I am careful to wash my trays, sink, etc with dish soap and hot water after each use. I typically wash my developer and st op trays while the prints are in the holding bath, but re-use the fixer traywith fresh chemistry. I suppose there is some minor opportunity for soapy spray to land in the holding bath, but I do try to be careful, and have been using the same workflow for years usually without problems. Any ideas as to what is causing this staining with dilute selenium? Thanks for looking.