Quote Originally Posted by Photo Engineer View Post
Thiosulfate decomposes slowly in solution and loses potency therefore making the developer more variable. Also, the risk of dichroic fog is increased. As Ian mentions, hypo is also less efficient at the same concentration as thiocyanate.

PE

So using a fresh one-shot thiosulphate solution and maybe a pinch of potassium bromide should make it...
Hypo is also much cheaper than thiocyanate...