So I just recently re-set-up my darkroom, and I have Sodium Thiosulphate and Sodium Sulfite. I was planning to use F-4 from photographer's formulary for my neg fix, but I'm still waiting on it to come in and getting antsy... Has anyone used a Sodium Thiosulphate based fixer for negatives? I've read some on the forums of folks using tf-2 for Pyro negatives, but nothing else about using a Sodium Thiosulphate fix for negatives. Any success / failure stories, times, recipes, etc. would be welcome!