I've found some discussion on Tetenal kits and how to extend the use of dev and blix. For example for first 5-8 films dev time is 3:30 and 6:00 for blix, then next 9-12 films dev 3:45 blix 10:00, next 13-16 dev 4:00 and blix 15:00.

Does anybody tried to do that for the Rollei digibase kit, and could you share your experience with us?