Water and stop can work equally well although the acid can stop the development immediately. There is a grain penalty for either. I recommend you skip it altogether and go straight into the fix.

Ronald. Why is there a grain penalty for using water or stop? How noticeable is it? I don't think I had seen this as a reason for not using water or stop bath before?

Anyone else have any comments or experience of this negative aspect of water or stop?

Thanks

pentaxuser