I do minimal agitation with Fomapan 100 in Pyrocat-HD 1:1:100 fairly frequently. I use tanks & hangers. I don't have the exact timing in front of me now, but it's something like initial agitation for 1 min, followed by 1 agitation cycle at third marks for a total of 15 mins. If you want the exact info, just let me know and when I'm at my computer I'll get it right.
IIRC, you only need about 75ml working solution (at 1:1:100) per 4x5 sheet of film. Back when I was playing around with extreme minimal agitation and using a very dilute mix of Pyrocat-HD, Mr. King told me you could probably go up as high as 1:1:400 or 500 without worrying about weak chemistry. Therefore, I wouldn't worry about several 4x5 sheets at a time with 1:1:100.
I haven't bought the pre-mixed stuff for years. In addition to Photo Formulary, check out ArtCraft Chemicals; generally cheaper prices there. Just be sensible when mixing--i wear rubber gloves, eye protection, a breathing mask, and mix the catechol outside--and you'll be fine.
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