Quote Originally Posted by michaelbsc View Post
I don't know. I haven't tried C41 yet. But my understanding is the the bleach needs oxygen to stay fresh. Just the opposite of developer.

Someone a few years ago was posting about using an aquarium air pump and stone to aerate the bleach.

Yeah, I know, I used to aerate that way myself. I'm not sure what else it would react with. It turned black everywhere it went, on both the plastic and the paper labels.