Hey Im currently using the Tetenal Colortec C41 5 litre kit, cost about $150 here, i think there are only 2 places in Australia that sell this stuff... Anyway I dont want to buy it in kits after this...costly.. this kit uses a combined process of Ammonium Ferric and Ammonium Thiosulfate for a blix process. Firstly, can I use these two solutions in separate baths for separate bleach and fix? Or do they need to be run together? Secondly, if I run separate bleach and fix baths, can I use B&W fixer in place of the c41 fix? Thirdly, if I run separate bleach and fix baths, is it possible to mix up my own bleach solution from common household/supermarket chemicals (or ordered through a chemist (drugstore for you americans))? Ive been researching and experimenting trying to create my own bleach and developing cut off tails of c41 films, and all my mixes have been either inert (no effect on the film), or have indiscriminantly stripped the entire film clear (these tails were exposed to light thus should be black/dark) I also want to get into E6 - but the 5 litre kit is $200 with shipping (about $134 US at time of exchange rate - but back last year when we were 1:1 prices were still the same) and E6 rolls are about $22 a roll ($15 US - will be bulk ordering Astia from the U.S with like $40 US shipping that works out to be less than half price still - even with the exchange rate and shipping costs) :/ Oh, and assuming I can get my hands on formalin/formaldehyde - I can make my own stabiliser by mixing it with cloudy ammonia (the 5% liquid stuff at supermarkets). If I can just work out everything where I only need the development chemicals, and substitute the rest of the processses with alternatives outside of a kit, I can substantially reduce the cost for myself. p.s: ive been careful to not make any poisonous gasses in my experimentation.