Hi all, I've been playing around with using coffee/washing soda as a developer for my paper neg's and I'm pleased with the results and look that I'm getting. I'm using a plain water stop bath, but now I'd like to make a simple fixer bath. OK - so I could purchase Sodium Thiosulphate and I know it's cheap and readily available, but am I right in thinking that in the early days of photography sea water was used to fix images? It may need lots of water and/or take a longer time to work but I'm interested in finding out a bit more about whether a saline solution could be used, i.e. by dissolving a quantity of table salt in water. Does anyone have any ideas about whether it would work? What ratios would be needed? How long it would take? Has anyone out there tried it?! Thanks, David.