I put two films on one reel, one after the other. I put on the first film, and wind it all the way to the middle. Than I put the second film on the same weel. I do this to save time, each development process takes about half an hour : loading, development, stop, fix, rinse.. Another option is buying a greater tank, but than you can still put two films on one reel, and save even more time. My father told me he puts two films on one reel, by putting the films back-to-back with the sensitive side on the outside. Hoping vaving helped you a lot..(posted 8681 days ago)Yvo