This one is kind of 'out there' but I could really use some help... Does anyone know, in practical terms, how one would go about using magnesium, to precipitate struvite out of the humonia, and reclaim your phosphates while lowering N content? I think struvite should have an NPK value of 6-29-0 (Mg-10). The urinary stones people sometimes get is called Struvite -  NH4MgPO4·6H2O) is formed when ur…