Quote Originally Posted by SchwinnParamount
Is it possible that a water stop bath is less effective in stopping development at the edges of the film where it is in contact with the reels?
In a word yes!

Always use an acid stop for paper and film. It will eliminate many problems down the line after the developer and provide consistent repeatable results.

I've been processing film for over 30 years and have never seen pinholes. Just dilute the stop properly.

Don Bryant