"My" darkroom is at the university -- about 125 students developing film and making prints a semester, as well as myself. Used fixer is the only primary (dev, stop, fix, HCA) photo chemical that our world renown sewer treatment facility does not want down the drain.

We also have all selenium, dirchromate and ferricyanide compounds shipped off...oh, and Part B of Sepia Toner, also.

Vaughn