When processing 35mm rather than mixing individual batches of Photoflow per reel/tank, I 've mixed a small Tupperware container with a lid, and seesaw the film strip through it before hanging to dry. The film is well washed. I began thinking this may not be the most advisable method if there is some chance that there is any chance of fungal growth, etc. in the tub over time. Any comments or recommendations for or against this approach?