There used to be a good instructional video on Youtube, posted by Regenag, but sadly it has since disappeared.
There is however a good series of videos of a Regenag Workshop given by Eugenio Gras which includes general ingredient instructions. For the Bio Fertilisers I would imagine that the gist of the idea is more important than specific ratios. The Lime Sulphur brew on the other hand does need careful measurement.
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