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The Pyro I buy is from Zone Imaging, I tend to follow their advice and use Rudiger Hartung method which they give the dev times on the data sheet which can be found here, essentially it's just a brief agitation every 7ish mins and around 25 min dev times depending on film stock, water as a stop bath and a neutral fixer.
In my experience it has been worth figuring it out, I'm finding a lot more detail in the shadow areas and very low grain, although, the negatives are quite contrasty.
amey
GDCadam
This is an incredible image. Also, the use of PMK is interesting, I've been using Pyro 510 for a while with a semi-stand method and it's a fantastic developer.