I just did some Kalitypes today where one was a bit dark. I always Selenium tone my Kalitypes and I did bleach the dark one back with a very mild pot ferri brew that increased the contrast and made the photo seem less dark - Which suited this image ok - If I plan to bleach after toning, I usually don't allow it to finish toning. Selenuim really is a good barrier to pot ferri and the shadows will always remain quite dark - Frank