I reuse the soil. I have bin a just for used soil, used as in like 1 grow/bloom cycle 100 days approximate. I usually let it sit for a bit before adding it to the worm bin, I add ground dried trims and roots to it. I just started the meals like 3 weeks ago the alfalfa I just got yesterday. I still would like some humic acid and some type of glacial dust in the mix. I'm going to look into the AACT. I have an airbrush compressor that I'm gonna rig for a brewer. I have a revised list for a 1.5 cu subsoil mix I just need to get a new container for that.