I've been using a 5-reel Paterson tank successfully, but I recently found an 8-reel tank in someone's moving day garbage. I tend to do large developing runs, so a bigger tank is always welcome. I just wonder if 1 liter is enough chemistry to cover the film when run on a Uniroller base. I did a quick test, loading the center core with one reel and covering the top with saran wrap. 1 liter of water seemed to come up just to the bottom of the center core. That seems a little close for comfort, but I thought I'd call on your collective wisdom before I risk it on anything. Searches didn't turn up any useful information. I don't mind having to use 2 liters, as the rotary is only for C-41 and I reuse that forever anyway, but I'd rather stick with the smaller quantities.