Yes this is interesting! I wonder did you pH test the different media, the pre biodynamic soil the low biodynamic soil and the high biodynamic soil!
Most organic fertilzers are acidic by thier nature and most rock mineral type fertilizers are alkaline and these rock minerals are what microbes or beneficial bacteria supposedly feed off of according to brix gardening theory, ,but I have'nt a clue the pH of biodynamic fertilizer ! It would be interesting to know this and what exactly is the biodynamic blend consist of!
Is this the fermented fertilizer that uses black strap molasses as an activator?